US ambassador to Mexico to resign

The U.S. ambassador to Mexico, Roberta Jacobson, is resigning from her post this spring, amid strained relations between the two countries and on the heels of other notable departures from the State Department.

In a note sent to embassy staff Thursday, Jacobson wrote that after more than 31 years in government service, she has submitted her resignation and it takes effect May 5, two years to the day after she was sworn in as ambassador.

“I have come to the difficult decision that it is the right time to move on to new challenges and adventures. ... This decision is . . .