The Latest on the presidential campaign (all times local):

7:45 a.m.

Sen. Lindsey Graham's endorsement of onetime Republican presidential rival Ted Cruz for the party's nomination doesn't extend to Cruz's new proposal on U.S. Muslims.

Graham tells NBC's "Today" show that Cruz's call for increased surveillance of Muslim communities in the U.S. after the Brussels attacks "doesn't make sense."

The South Carolina Republican, who dropped his own bid for the White House, seemed to qualify his answer when asked Thursday about Cruz's statement. Graham said that closer cooperation with the Muslim community would be helpful if it meant there would be a "better policing relationship." But he said he didn't think tighter surveillance would be the correct approach.

Graham has said he came out for Cruz because he worries that Donald Trump "would destroy" his party.