Donald Trump is grappling with the fallout from canceling a rally in Chicago over safety concerns.
- Donald Trump rouses supporters at a raucous rally in Ohio, a day after protests in Chicago
- How black, Latino and Muslim college students organized to stop Trump's rally
- Marco Rubio laments that the GOP race has reached a "boiling point," blaming Trump
- Hillary Clinton condemns Trump: His rhetoric is "political arson"
- Clinton and Sen. Ted Cruz pick up delegates on Saturday