Welcome to the Reader’s morning briefing for Thursday, May 19, 2016.

Mark Kirk calls Donald Trump a “river boat gamble”Senator Mark Kirk has reservations about presumptive GOP presidential nominee Donald Trump but still supports him, Kirk told USA Today. Kirk, facing a heated reelection race against U.S. House member Tammy Duckworth, called the controversial real estate magnate a “river boat gamble” but said his own national security expertise would be an asset to a President Trump. [USA Today]