The all-night event to highlight climate change impacts is expected to draw 28 Senate Dems.
Blog Briefing Room
President Nicolás Maduro says the U.S. "aims to generate a false image of war."
A new poll by CNN and ORC found little public support for using military force.
Heroin-related deaths spiked by 45 percent from 2006 to 2010, Holder said.
The two leaders agreed on the importance of sovereignty in Ukraine, the White House said.
He said Russia has clearly crossed a line in Ukraine.
Biden made the remarks as he visits Chile to attend the swearing in of Michelle Bachelet.
Gallup found the percentage of uninsured people ticked down, perhaps as a result of the ACA.
Alyssa Mastromonaco will reportedly leave in May.