...Wayne LaPierre...told him it would not be popular among Trump's supporters,...LaPierre also argued against the bill's merits, the officials said...On Tuesday, Trump outlined some NRA concerns...with Manchin...Manchin said. "I told him, we don't expect the NRA to be supportive. Mr. President,...when you did the bump stocks, they weren't for you. They were against that, too...A White House official said Trump had asked some advisers and lawmakers this week about whether the NRA had enduring clout amid an internal leadership battle...After the Parkland shooting, Trump expressed support for background checks...and greater police power to seize guns...But he faced significant resistance from...