Trump protesters and supporters flocked to Trump's rally in California.
Palin tore into Obama's trip to Hiroshima in an opening speech for a Trump rally.
Carson will talk Trump, immigration and what's at stake in the 2016 election.
"That is our principle responsibility," Jeh Johnson said.
Such a debate would contrast "traditional American values and socialism," Carson says.
"There's no moral equivalence here," the former U.N. ambassador said.
The online program has put what it calls "a very real offer" on the table.
"That means no opinions and no precedential value," Ginsburg said of 4-4 deadlocks.
A Secret Service official encouraged the leak of Chaffetz's 2003 application to the agency.
Trump was delivering a speech on energy in North Dakota.