President Trump signaled he was open to some proposals to curb gun violence on Wednesday during an hourlong televised meeting with a bipartisan group of lawmakers.

But even as he voiced support for proposals generally backed by Democrats — including expanded background checks and raising the age limit to 21 for some gun buyers — the president peppered his remarks with inaccuracies about mass shootings and gun policy.

And many of his comments hewed firmly to traditional Republican Party tenets.

“Hey, look, I’m the biggest fan of the Second Amendment,” Mr. Trump said. But he then said law enforcement should “take the guns first, go through due process second” when dealing with people who own guns and exhibit signs of mental illness.

The president also repeatedly chastised lawmakers for being “afraid” and “petrified” of the National Rifle Association, which he then also praised as filled with “great patriots” who are “well meaning.”