We have that. Noiw if only mental health "professionals" will do their job and put these people in the system.
Prosecute a few who fail to, see if that gets their attention.
Obviously we don't, or at least not in Florida. In fact, federal law, like the one that the NRA and their Republican cronies voted down, made it illegal for social workers to do so once Cruz turned 18.
https://www.politico.com/story/2018/02/15/florida-school-shooter-reported-behavior-trump-350072
Federal law prohibits people who have been involuntarily committed for mental illness from buying guns, but that gives a pass to people like Cruz, who, according to media reports, had never been committed to a psychiatric facility or adjudicated by a court for a mental illness, but still exhibited signs of mental disorders.
Policy experts and lawmakers have tried reforming the background check system to include more people, but Trump’s reversal of an Obama-era regulation did the opposite. The rule required the Social Security Administration to report people on disability insurance who had severe mental illness and required someone else to file for them, to the FBI's background check system to prohibit them from purchasing a gun.
“He made it easier for the mentally ill to get guns,” D.J. Jaffe, executive director of Mental Illness Policy Org., said of Trump.......
Even when law enforcement officials are contacted about troubled students, their hands are often tied.
"In the work that I’ve done with law enforcement officers, they’re in a tough spot because they want to be helpful but can't do much when laws haven't been broken," said Melissa Reeves, former president of the National Association of School Psychologists and an expert who assists schools in assessing potential threats. "I don’t know what law enforcement officers would’ve done."
Reeves stressed that schools and communities have inadequate resources and the country's mental health system is "broken.”
Schools are often an “easy target for blame,” she said. “They’re expected to do everything while their funding and resources are cut.”......
“Reporting people doesn’t guarantee they will receive treatment,” Jaffe said. “In this case, [Cruz] had been in treatment and he was allowed to go off. It is very tough to compel anyone who doesn’t have any background of incidents into mandated treatment. American law basically prevents treatment until after dangerousness.”
Cruz was receiving mental health treatment until last fall, but the nature of that treatment is unknown.........
After other mass shootings, Trump has suggested the need for mental health reform. But just this week, for the second year in a row, his budget proposed deep cuts to the nation’s mental health programs and programs
meant to help prevent crime in schools and assist them in recovery from tragedies.
He has also proposed slashing billions of dollars from other social safety nets like Medicaid, which millions of Americans rely on to get mental health treatment, and he’s pushed the repeal of Obamacare, which includes coverage protections for those with mental illness.
Public health experts say Trump’s budget proves the administration isn’t interested in investing in mental health programs, which have been underfunded for decades. The total federal budget for mental health treatment programs in the Health and Human Services Department’s budget is just over $1 billion dollars........
“People have no idea how little investment there is in mental health. $1 billion doesn’t go far in an economy where there is a deficit of $1.6 trillion,” said Paul Gionfriddo, president and CEO of Mental Health America. “We’re not even a rounding error anymore in terms of the new money they put into mental health.”