Republican presidential candidate Donald Trump is accusing President Barack Obama of making it easier for Muslims rather than Christians to enter the U.S. in the midst of the Syrian civil war.

“If you were Muslim from Syria, you can get into this country … if you were a Christian from Syria it was almost impossible to get in and yet the Christians were having their heads cut off,” Trump told a crowd Wednesday in Worcester, Mass. “It’s the most unfair thing, this is during the Obama administration … what’s wrong with us?”

The businessman, though, did admit the challenge of proving the religion of those claiming refugee status. “Well I don’t know if you can prove they are Christian, first of all I happen to be Christian, I’m Protestant, and I would love to do that, but how are they proving that.”

Obama blasted the idea of admitting people solely based on their religion.

“When I hear folks say well maybe we should just admit Christians but not Muslims, when I hear political leaders suggesting religious test for which person who’s fleeing from a war-torn country is admitted … that’s not who we are. We don’t have religious tests to our compassion,” he said at a press conference Monday.

Trump echoed his concerns for allowing more Syrian refugees into the country over security questions. “I have a real concern that the people coming into this country are coming in for very bad purposes and they are coming all different ways, coming in for some very bad purposes.”

Roughly 2,200 refugees have been admitted to the U.S. from Syria since 2011, according to the State Department's Refugee Processing Center.

Trump told reporters the White House should focus more on fighting “radical Islamic terrorism”. A phrase he said administration officials must accept as the correct terminology.

“We have a president that nobody can understand, he doesn’t want to use the term … whether you like it or not, it’s a very gruesome fact; a very serious problem … unless you are going to use the term, you aren’t going to solve the problem.”

The GOP contender cautioned that he’s not targeting the American-Muslim community and was confident many would support his 2016 bid.

“I’m going to do great with the Muslims, they understand what I’m saying.  We're talking about safety and security … look what’s happening all over the world”, Trump explained.”