The U.S.-Canada border is the likely path for terrorists to invade the country, according to top national security experts and Congress' most comprehensive review of America's 19,000 miles of coasts and land borders.

"The nexus between known or suspected terrorists in eastern Canada and the northern parts of the U.S. represent [sic] a significant national security threat," said a new report from the Senate Homeland Security and Governmental Affairs Committee, a conclusion reached as Canada decided to settle 25,000 Syrian refugees by March.

"The border is not secure," Sen. Ron Johnson, the Wisconsin Republican who is chairman of the committee, told Secrets. He included the southern border, where he said that drug cartels are teaming with "potentially Islamic terror organizations."

Wisconsin Sen. Ron Johnson's massive report on U.S. borders points to problems in the north where terror suspects have been arrested. AP Photo

He raised concerns about the rushed refugee plans of new Canadian Prime Minister Justin Trudeau. "It is a concern with the new prime minister, Trudeau, opening up his border to refugees. They can come into America, so I would say that increases our risk," Johnson said.

Unlike the U.S.-Mexico border, the U.S.-Canadian border is mostly just a ditch.

His panel's new 100-page report, show in pdf form at the end of this story, is based on dozens of hearings, interviews and trips, cites terror arrests in Canada and U.S. border states of Islamic State threats and quotes several experts raising concerns about how easy it is for illegal immigrants and terrorists to cross in from Canada.

"Security observers have argued that Canada represents a substantial vulnerability, because it provides immigrant visas to individuals who pose a significant threat," said the report, "The State of America's Border Security."

Read more on WashingtonExaminer.com