The White House has been talking to a trio of lawmakers: Democrats Chris Murphy and Joe Manchin and Republican Pat Toomey. They all support tougher background checks.
"I'm talking about meaningful, write that word, meaningful, meaningful background checks," Mr. Trump said August 9.
But Mr. Trump never defined what meaningful means and quickly backed off after talking to the National Rifle Association.
"We already have very serious background checks," Mr. Trump said August 21.
Since then, Mr. Trump has called mass shootings a mental health issue and criticized what he sees as overzealous Democrats.
"Democrats want to confiscate guns from law-abiding Americans, so they are totally defenseless when somebody walks into their house with a gun," Mr. Trump said.