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Good morning.

Here’s what you need to know:

White House split on border wall

• “Build that wall!” — a rallying cry to physically protect the U.S. border with Mexico — was a central message of President Trump’s campaign. But his promise to do so was not “fully informed,” the White House chief of staff, John Kelly, privately told members of Congress on Wednesday.

Mr. Trump turned to Twitter this morning to contradict his chief of staff. “The Wall is the Wall, it has never changed or evolved from the first day I conceived of it,” he wrote, conceding that it would not be necessary on all 2,000 miles of the border, as parts are impassable.

• At a meeting with members of the Congressional Hispanic Caucus, Mr. Kelly also expressed confidence that a deal could eventually be reached to preserve protections for the immigrants known as Dreamers.