Andrew S. Boutros, the Trump-appointed U.S. attorney for the Northern District of Illinois, is said to be overseeing the criminal investigation.

Ms. Whitmer, the Michigan governor and one of the country’s most prominent Democrats, has been conciliatory with Mr. Trump. As she mulls the future, her party is split on that approach.

Prime Minister Benjamin Netanyahu said Israeli ground forces had crossed Lebanon’s Litani River, as military officials from the two countries were set to meet for U.S.-brokered talks.