While amnesty advocates are exploiting the horrific Boston Marathon attack as justification for quickly passing an amnesty, the 
Center for Immigration Studies finds that the failed FBI background checks of terrorism suspect Tamerlan Tsarnaev indicate that the government does not have the capacity to adequately vet the backgrounds of 11 million illegal aliens, and that an amnesty might actually facilitate terrorism.
The FBI reportedly spent part of 2011 and an unknown amount of resources investigating Tsarnaev’s ties to terrorism after an apparent alert from Russian intelligence officials.
The FBI said it “did not find any terrorism activity, domestic or foreign” after interviewing Tsarnaev and his family and checking his travel records and Internet activity. As noted by Sen. Jim Risch (R-Idaho):
[The FBI] actually interviewed [Tsarnaev], they interviewed neighbors, they interviewed relatives, and there were no red flags raised. They were doing the best they could do with the information they had, but they uncovered absolutely no facts here that raised the matter to a level that this man should get 24-hour surveillance, or any of the other things that are available to the FBI to watch them.
Meanwhile, Sen. Marco Rubio (R-Fla.) and his allies are arguing that because terrorists may be living in the United States illegally, passage of the Schumer-Rubio amnesty would benefit national security. Rubio explained:
The fact is that today there are 11 million people already in this country and we don’t know who they are, why they’re here, and what they’re doing.
That is not only an economic problem, it’s a huge national security problem as well.
But the background checks in the Schumer-Rubio bill will be much less rigorous than the background check conducted by the FBI on Tsarnaev. The bill’s background check provision does not require face-to-face interviews with immigration officials. No provision requires an applicant’s neighbors or family members to be interviewed, and an applicant’s internet activity certainly will not be analyzed. Even with face-to-face interviews, the 1986 amnesty (Immigration Reform and Control Act) still resulted in massive amounts of fraud; it is estimated that 25 percent of all amnesty recipients, or 700,000 individuals, acquired U.S. citizenship fraudulently.