From the Trump War Room on the president's record on gun control:
“FACT: President Trump signed bipartisan legislation to improve the federal firearm background check system and keep guns out of the hands of dangerous criminals. #DemDebate.”
Details: Trump signed a bill into law in 2017 that rolled back an Obama-era regulation that made it harder for people with mental illnesses to purchase a gun.
The Justice Department issued a ban in March on bump stocks, which enabled the Las Vegas shooter to create a semi-automatic firearm. However, Trump has threatened to veto two bills pending in Congress. The House passed separate measures, one to strengthen background checks and the other lengthening the background check review from three to 10 days.