During a listening session, President Donald Trump sat down with victims and parents of victims of recent school shootings and some of the ideas brought up are still getting a lot of discussion.

The president promised to be "very strong on background checks." He also suggested on working on mental health and he supported allowing some teachers and other school employees to carry concealed weapons.

"This would only be obviously for people that are very adept at handling a gun, and it would be … it's called 'concealed carry,' where a teacher would have a concealed gun on them. They'd go for special training and they would be there and you would no longer have a gun-free zone," said Trump.

Some lawmakers do not support that idea like Massachusetts Democratic Rep. Seth Moulton.

While North Carolina's Republican Rep. Mark Meadows says just having the discussion alone is important.

Parents also shared their thoughts, such as Andrew Pollack, whose daughter Meadow Pollack died in the deadly shooting at Marjory Stoneman Douglas High School. Andrew Pollack said there never should have been any more school shootings after the first one.

"Fix it. It should have been one school shooting and we should have fixed it. Because my daughter, I'm not going to see again. She's not here. She's not here. She's in … King David Cemetery. That's where I go to see my kid now," the emotional father said.

Some students tearfully echoed what Pollack's words.

"I turned 18 the day after" the shooting, said a tearful Samuel Zeif, a student at the high school. "Woke up to the news that my best friend was gone. And I don’t understand why I can still go in a store and buy a weapon of war. An AR. How is it that easy to buy this type of weapon? How do we not stop this after Columbine? After Sandy Hook?"

A strong supporter of gun rights, Trump has nonetheless indicated in recent days that he is willing to consider ideas not in keeping with National Rifle Association orthodoxy, including age restrictions for buying assault-type weapons. Still, gun owners are a key part of his base of supporters.

The NRA quickly rejected any talk of raising the age for buying long guns to 21.

“Legislative proposals that prevent law-abiding adults aged 18-20 years old from acquiring rifles and shotguns effectively prohibits them for purchasing any firearm, thus depriving them of their constitutional right to self-protection,” the group said in a statement.

The Associated Press contributed to this story.