FILE – In this Friday, April 19, 2013, file photo President Barack Obama speaks in the Brady Press Briefing at the White House in Washington about the Boston Marathon bombing and the ex

 

              FILE – In this Friday, April 19, 2013, file photo President Barack Obama speaks in the Brady Press Briefing at the White House in Washington about the Boston Marathon bombing and the ex
FILE – In this Friday, April 19, 2013, file photo President Barack Obama speaks in the Brady Press Briefing at the White House in Washington about the Boston Marathon bombing and the explosions in West, Texas. For Obama, one of the most trying weeks of his presidency saw the specter of terrorism raised anew, and the revelation of a more emotional side of a leader often criticized for appearing clinical or detached. “This was a tough week,” Obama said in his late-night briefing remarks shortly after law enforcement officials captured a second suspect in the Boston Marathon bombings alive. (AP Photo/Charles Dharapak)