Instead, a new federal commission on school safety will examine the age issue, as well as a long list of others topics, as part of a longer-term look at school safety and violence.
At a rally in Pennsylvania on Saturday, Trump criticized policy commissions while speaking about the opioid problem, saying, "We can't just keep setting up blue-ribbon committees".
Trump has said he was personally moved by the shooting - and by the persistent and impassioned calls for action from some of the teenage survivors as well as parents of the victims - and elevated the issue of school safety in his administration. Back in February he said the NRA will back it. Florida decided to make that move and the NRA is suing the state of Florida.
The president quickly drew Democratic criticism over age limits. Sen.
Hogg also pointed out that talk about gun control, in the absence of meaningful action, is just that: talk.
Trump's position on guns, like his position on the "dreamers" or nearly anything else, is a public policy version of Schrödinger's cat. "Cowards will only go where there is no deterrent!" The idea of raising the minimum age for rifle purchases is gone, as is any talk of a comprehensive effort to patch the holes in our background check system.
When Republican Senator Pat Toomey said he opposed raising the minimum age for gun purchases, Trump had sharp words for him.
The administration also pledged to help states pay for firearms training for teachers and reiterated its call to improve the background check and mental health systems.
A Republican who speaks with senior White House officials regularly says this is what many aides were looking to avoid.
The DOJ issued a directive calling for the FBI to identify local jurisdictions that are failing to report arrests to their state repositories and heads of federal agencies to certify that they will report all relevant records to the NICS. "It's not going to be appropriate in every location, but it is going to be appropriate in some places".
White House spokesman Raj Shah had said earlier Sunday in an interview with ABC's "This Week" that "the president has been clear that he does support raising the age to 21" and that that would be a "component" of the announcement.
The plan is less ambitious than the changes Trump advocated in a series of listening sessions in the weeks after the massacre. This follows reports that calls came into the Federal Bureau of Investigation tip line warning about 19-year-old former student Nikolas Cruz, prior to his shooting and killing 17 people last month at a high school in Parkland, Florida.
"I mean, so they buy a revolver - a handgun - they buy at the age of 21. I think it's something you have to think about". He started out as one of the most pro-gun and pro-National Rifle Association presidents in modern history.
On Friday, Florida Governor Rick Scott signed into law a gun control bill that was passed by the state's legislature. "Today I am directing the Department of Justice to take a number of new steps that will help make schools and the American people safer from the threat of gun violence".
At the same time, Republicans anxious that the mercurial and ideologically ignorant Trump would complicate their well-laid plans with his desire to play to the crowd, particularly since so much of what they advocate is deeply unpopular.