Gov. Andy Beshear of Kentucky said emergency crews were rescuing people from flooded homes and vehicles on Saturday. Rain was expected to continue into the night.

Scott Wiener, who is running to replace Nancy Pelosi, was surrounded by a small group of protesters shouting invective before a transgender march in San Francisco.

The president said he was nominating Lance Schroyer, an adviser to Markwayne Mullin, the D.H.S. secretary, to lead the high-profile agency.