President Bush is on the offensive in making his case for using every tool available to protect the American people. The president defended his allowing the NSA to wiretap American citizens who have corresponded with known terrorists. Bush argued the necessity and constitutionality of the controversal program, which he calls a "terrorist surveillance program."

Sen. John McCain (R-Ariz.), appearing on "FOX News Sunday" (Sundays, 6pm ET), said he didn't think Bush has the legal authority to engage in warrant-less wiretaps, and that the president should fully consult with lawmakers from both parties on the best strategy for spy programs within the confines of the law. Read more.

FNC wants to know what YOU think —

Should the threat of war and terrorism allow the government to spy on citizens?

E-mail us at speakout@foxnews.com and jump into the debate!

Check out what FOX Fans are saying:

"I do think that domestic eavesdropping is a necessity in today's world. We don't live in the utopian dream of the far Left. We can't handicap our intelligence agencies, they have enough trouble doing their job." — Matt (Knoxville, TN)

"I don't trust Bush as far as Cheney could throw him. The government has NO right to spy on it's citizens without a warrant. It is clearly illegal. It is wrong. Bush and his cronies must be investigated, prosecuted and stopped!" — Chris (Cleveland, OH)

"YES! You talk to a terrorist, you lose your civil rights. If my mother was talking to one of the 9/11 terrorists, you bet I'd have no reservation with the government spying on her or me for that matter. If you don't have anything to hide, then what's the problem? Remember the World Trade Center? Where were you on September 11th? I know where I was. I watched it. It happen in my backyard. I also know where I stand today. We must never give in." — Daniel (Staten Island, NY)

"Simply put, no. The government has NO right to spy on its citizens. Bush should turn his efforts to having intelligence agencies that actually do their job to protect American citizens. Our border security is a joke. Homeland security is a joke. We are no better off than we were before 9/11. I'd say it's worse. Bush is grasping at straws, and we as Americans are paying the price." — Karen (Mobile, AL)

"That's like asking if the threat of a child molestor gives the community the right to know who in their community has registered as a sex offender. Of course the government should spy on citizens who are in contact with known terrorists. Just because you are a citizen doesn't mean that you are an American." — Samantha (Greenville, SC)

"I don't believe so, but there should be an investigation into the White House to see if they broke the law." — Cora (Flushing, NY)

"These lawmakers are just politicizing terrorism, just like the president does. That's the world we live in. If you think there is some grand conspiracy, then you are nuts. However, if you think that this administration is acting out of the goodness of their heart for every American, you are even more nuts. It is wrong of the president to eavesdrop without warrants, if he broke the law. That's if he did. I doubt we will ever know." — Huey (Houston, TX)

"I do know that we live in a new era after 9/11 made us aware of the dangers of terrorism here at home, but the terrorists win every time this president steps on our civil liberties." — Mimi (New Haven, CT)

"Bush is the president and has the right. Where did he break the law? Show me. If he did, then he should be held accountable. If not, move on and let him do what he was elected by a majority to do!" — Ollie (Chicago, IL)

"The sheer fact that the president felt that he didn't need to follow our laws and do this secretly is a clear indication that he is lying. There are laws that are in place to protect Americans' freedoms and to prevent a breech in security. Why couldn't Bush follow them? Most educated people, Republican and Democrat, can clearly see that Bush broke the law. Even McCain said so. Why couldn't Bush consult the Congress? The answer is all too sadly clear. Bush must be removed from office before more damage is done to our way of life." — Carol (Watertown, MA)

"I support the president 100%! He is trying to do the job he was elected to do. Exposing the work of the NSA is treasonous! Whomever did that is the one who should be investigated!" — Donald (Hickory, NC)

"The president doesn't have the right to wiretap American citizens without a warrant. They have been doing this to thousands and thousands of people, and guess what? Nothing has come of it! Nothing! Then why continue with no regard of the law? Bush needs, no must be stopped ASAP!" — Ted (Providence, RI)

"Yes, if you have nothing to hide then you have nothing to fear. We are at war people!" — Lou (Dallas, TX)

"NO! Bush has been busted and I hope that he gets what is coming to him. If you really think he cares about your personal freedom and is trying to do what's best for America, then you, my friend, have been brainwashed. Bush has only proven to misled the American public in regards to his agenda." — Eric (Austin, TX)

"Considering the technology available today, there is no justification for the U.S. government to go around the existing laws to eavesdrop on U.S. citizens. If the government refuses to use the tools at hand then it is breaking the law and those responsible should be held accountable." — Jim (Milwaukee, WI)

"I'm not a big fan of President Bush but I think he did right by engaging in domestic eavesdropping. I believe it is one of the reasons why there have not been any other attacks here in the U.S. by those cowardly terrorists who hit us on 9/11. Bush said he would do everything he could to fight terrorism and that is what he is doing, with one exception: our wide-open borders. Anyone who criticizes Bush's wiretapping is supporting the terrorists." — Harold (Seattle, WA)

"No, the president has no right to break the law, or use the memory of those who died on 9/11 to further his agenda! I am disgusted by the president's and his administration's constant falling-back on 9/11! I lost family that day. This administration continues to mislead America by using it to further their political ambitions. His speech justifying his domestic eavesdropping was appalling. It is reprehensible and misleading it is to call upon September 11th whenever they need to give justification for their misguided and batched war in Iraq." — A. (New York, NY)

"Most members of congress (both parties) are untrustworthy and are too prone to leaks. The president was correct to spy on people who were known to have contact with terrorist organizations that are planning our destruction. There are two sides to this story. You are either with the terrorists or against them." — Connie

"No! Bush should be impeached for breaking the law, not to mention for misleading America about Iraq." — Drew (Atlanta, GA)

"I'm all for domestic eavesdropping if it will help protect Americans. I'd rather be at war overseas than in my own city." — Emily (Memphis, TN)

"Absolutely not! Bush is a threat to democracy. We have been warned of such corrupt individuals before. Eisenhower warned us and so did our forefathers. These are the darkest days of our nation's history. May God help us." — Jennifer (St. Louis, MO)

"We in America are not alone, we have millions of illegal aliens here who would like nothing better than to have us put a stop to the work of the NSA. We, as American citizens, have the right to have the government keep the activities of the undesirables in check. If that means that my e-mails or my phone may be part of that scenario, then so be it." — Joanna

"Oh, sure, why not just take all of our civil liberties in the name of 'security?' It is amazing that in this day and age, with all that we have learned from corrupt politicians and leaders that this would come to pass again. They even have a brainwashed group of citizens who have actually fallen for these lies. It's like the fear tactics of McCarthyism." — Ted (Tacoma, WA)

"Yes, absolutely! If it is needed to catch criminals, then yes. Only a criminal would be concerned!" — Carmine (Loch Haven, PA)

"Bush is a lying and corrupt dictator. He will go down in history as one of the worst presidents ever. His regime will be seen as a group of incompetent cronies who had no real concern for freedom or for making this country better. We are in a far worse place than we where before he took office." — Larry (New York, NY)

"There is no time to vacillate when it comes to dealing with terror. I strongly support president Bush, and his strategy fro victory against terror here around the world. Please tell Senator Kerry he is a has-been, lost big, and continues to shine along with Kennedy and Dean as a beacon of material for Usama’s speeches. Someone please tell these folks that the American public get their appeasement and anti American message loud and clear, and that we do not agree!" — Rolando (Miami, FL)

"No, no, no! I believe that FISA allows listening for three days before they have to ask for a warrant. Because we are in open hostilities (Iraq and Afghanistan), that time is extended to 14 days. Then they only need to get the warrant if they want to keep listening to that particular number! I'm not doing anything nefarious, but I have a right to my privacy!" — Sue

"Yes, I think the U.S. Government should be able to do WHATEVER it takes to put criminals where they belong - in jail or out of this country (preferably)." — Christy