Meanwhile, 43 U.N. peacekeepers have been captured in Syria.
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Rep. Trey Gowdy (R-S.C.) says, "assuming cooperation," the panel should finish next year.
While more say the U.S. does too much, interventionist views have doubled since last year.
Rep. Andy Harris's wife of more than three decades passed away Thursday.
There should be "no doubt" that the White House is willing to act, Obama said.
Journalists and lawmakers were surprised by Obama's attire on Thursday.
Pundits expressed disbelief that a child was allowed to fire an Uzi.
"What he does is going to be the legacy of the president," he said.