Trump has a history of shifting his positions in response to events or advice. Before he entered the political fray in earnest, he expressed support for a ban on assault weapons and “a slightly longer waiting period” to purchase a gun.

But during his 2016 presidential campaign, Trump ran as an unabashedly pro-gun candidate, warning the NRA: “The only way to save our second amendment is to vote for a person that you all know named Donald Trump.”