Mass shootings are common in the United States, a country where there are more guns than people, and where efforts to curb their spread have always met with stiff resistance.
More than 600 mass shootings have been recorded in the country this year, according to the Gun Violence Archive, an NGO that defines a mass shooting as one in which four or more people are injured or killed.
The Washington Post, which keeps its own list of mass shootings, said as of Monday there had been 38 incidents in which at least four people were killed.
Las Vegas was the scene of America’s deadliest mass shooting to date, when a gunman opened fire at a crowded music festival in 2017, killing 60 people.
Efforts to tighten gun control have for years run up against opposition from Republicans, who are staunch defenders of what they interpret as an unfettered constitutional right to bear arms.
The political deadlock continues despite widespread outrage over the repeated shootings.
“This is not normal and we can never allow this to become normal,” Biden said.
“With all the action we have taken since I became President, the epidemic of gun violence we face demands that we take even more action. But we cannot do anything else without Congress.