Sen. Sanders and former Gov. O'Malley will be attending Netroots Nation.
One of the bills removes a 48-hour waiting period for gun purchases.
Carson's neighbors then flew the American flag in solidarity.
The show's host calls Rubio the "real deal."
A former campaign fellow is accusing Hillary Clinton of hypocrisy.
Christie would likely be the 14th GOP candidate in a crowded primary if he jumps in.
Clinton lauded South Carolina Gov. Haley for pushing to remove the Confederate flag.
Bush touted himself as a "decades-long advocate for school choice."
Donald Trump trails Jeb Bush by 3 percentage points.
Vicki Needham 06/23/15 10:11 AM EDT
The GOP presidential candidate voted against a procedural motion on fast-track.