That news has outraged U.S. Rep. Michael McCaul, head of the House Committee on Homeland Security.

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Another congressman, House Homeland Security Committee Chairman Michael McCaul, R-Texas, wrote a letter to ICE Director John Morton demanding accountability.

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"We really don't know if it's a foreign or domestic threat, " said Rep. Michael McCaul, R-Texas, chairman of the House Homeland Security Committee.

CNN: Boston Marathon bombings: More details, more questions

The TSA's moves toward a risk-based approach to security have the support of Rep. Michael McCaul, R-Texas, chairman of the House Homeland Security Committee.

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"We have stopped many of the terrorist plots and attempts from the past through good intelligence, " Rep. Michael McCaul, R-Texas, who chairs the House Homeland Security Committee, told CNN.

CNN: Past bombings prepared response in Boston

U.S. Rep. Michael McCaul, R-Texas and chairman of the House Homeland Security Committee, said Friday that information that Tsarnaev had been interviewed by the FBI in the past was disturbing.

CNN: FBI agents interviewed bombing suspect in 2011

The committee chairman, Rep. Michael McCaul, R-Texas, said it will be the first in a series of hearings to review the government's initial response, what information authorities received about the brothers before the bombings and whether they handled it correctly.

NPR: Top Boston Cop To Discuss Bombings With Congress