Andrew Pollack is the father of Meadow Pollack, who was killed on February 14 at the Marjory Stoneman Douglas High School in Parkland, Florida, when an expelled student allegedly opened fire with a powerful AR-15 assault rifle, killing 17 people, mostly students.
"We as a country failed our children. This shouldn't happen," Pollack told Trump yesterday during a listening session at the White House.
Pollack directly addressed the president, saying, "Mr. President, we're going to fix it."
He went on to say the country reacted quickly to the terrorist attacks on September 11, 2001.
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"I'm very angry that this happened because it keeps happening. 9/11 happened once and they fixed everything. How many schools, how many children have to get shot?" he said.
Pollack was photographed wearing a "Trump 2020" campaign shirt during his initial search for his daughter last week, US media reports said.
The Florida shooting incident has reignited the nationwide debate on gun control.
Students across America staged walkouts yesterday to demand action on gun laws from lawmakers.
In his comments, Trump vowed to get tough on background checks.
"We're going to be very strong on background checks," he said. "Its not going to be talk like it has been in the past. Its been going on too long. Too many instances, and were going to get it done."