GOP lawmaker has 'grave doubts' about Obama's counterterrorism efforts

"In barely four years in office, five jihadists have reached their targets in the United States under Barack ObamaBarack ObamaFirst lady slams Trump's 'birther' comments Obama's contradictory stance toward black asylum seekers Webb: After the debate MORE — the Boston Marathon bomber; the underwear bomber; the Times Square bomber; the Fort Hood shooter; and in my own state, the Little Rock recruiting office shooter.

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"In over seven years after 9/11, under George W. Bush, how many terrorists reached their target in the United States? Zero!"

"We need to ask why is the Obama administration failing in its mission to stop terrorism before it reaches its targets in the United States?" Cotton added.

Cotton's remarks came in the midst of ongoing GOP complaints about Obama's commitment to national security. Earlier this week, House Republicans released a report blaming former Secretary of State Hillary ClintonHillary Rodham ClintonTrump gives Lester Holt a C grade for debate Congress departs for recess until after Election Day House approves stopgap funding, averting costly shutdown MORE for the death of four Americans in last year's attack on the U.S. consulate in Benghazi.

On Wednesday, House Oversight and Government Reform Committee Darrell Issa (R-Calif.) said his committee would hold another hearing on the Benghazi attacks next month.