In this photo taken Monday, May 6, 2013, Sen. Marco Rubio, R-Fla., arrives at the Senate chamber for a vote, on Capitol Hill in Washington. One of the immigration bill’s authors, Sen. Marco Rubio, ... more 
In this photo taken Monday, May 6, 2013, Sen. Marco Rubio, R-Fla., arrives at the Senate chamber for a vote, on Capitol Hill in Washington. One of the immigration bill’s authors, Sen. Marco Rubio, R-Fla., has already acknowledged that the bill will face a tough road to passage if the border security elements are not improved. (AP Photo/J. Scott Applewhite) less 
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Associated Press | Photo By J. Scott Applewhite
Wed, May 8, 2013 2:46 AM EDT