"The world is complex, but some things are simple," he plans to say in Charleston.
Blog Briefing Room
"Nobody knows the tax code better than I do," Trump says.
He has thus far refused to promise to endorse the eventual nominee.
The president busted out into song while meeting New Orleans residents.
"He has a lot of experience at being wrong," Rubio said of Biden, who is weighing a bid.
"We do not tolerate any attitude of illegal discrimination," the manager of WDBJ7 said.
Tom Perkins is now calling his vote to oust Fiorina "a mistake."
Gov. Scott Walker (R-Wis.) said on Thursday that he did not stand up to Chinese President Xi Jinping over policies he objects to during their encounter two years ago because it would not have been appropriate.
Trump said the Univision anchor was "ranting and raving" during a press conference.
O'Malley urged the party not to "circle the wagons" around the front-runner.