President Donald Trump will retreat from his effort to include a citizenship question in the decennial census after a defeat at the Supreme Court, and will seek the information through other means, an administration official said.

The official said the Commerce Department, which manages the census, would be directed to figure out how to obtain the data.

“The president wants to know who’s in this country lawfully and who isn’t,” a White House spokesman, Hogan Gidley, told reporters on Thursday in advance of Trump’s remarks. He will do everything “in his legal authority” to find out, Gidley said.

ABC News...