Former President Trump called for heightened school security mechanisms at the National Rifle Association's annual meeting in Houston, Texas on Friday — mechanisms that Robb Elementary School in Uvalde, the site of a mass shooting that left 19 kids and two teachers dead earlier this week, had.

Why it matters: The Uvalde tragedy and the mass shooting in Buffalo, New York, that left 10 dead on May 14 have intensified the debate on gun control legislation and renewed scrutiny of gun rights organizations like the NRA, gun manufacturers and lawmakers who maintain close ties with the gun lobby.

What they're saying: Trump said it was time to "harden" schools around the nation, calling specifically for doors that lock from the inside and hired security guards.

Robb Elementary School had both doors that lock from the inside and a hired security officer at the time of the shooting.

Steven McCraw, director of the Texas Department of Public Safety, said on Friday that the school's officer was not on the campus when shooting near the school was first reported but immediately proceeded to the scene.

The big picture: The convention, which started Friday and goes through Sunday, is the NRA's first since 2019 because of the coronavirus pandemic.

Go deeper: McConnell directs Cornyn to work with Democrats on gun legislation