After back-to-back mass shootings killed at least 31 people and injured dozens more in Texas and Ohio, police chiefs in the nation’s largest cities, including Los Angeles, called on the nation’s top lawmakers to enact another ban on assault weapons and other measures to prevent mass killings.

In a two-page letter sent Monday to President Trump, House Speaker Nancy Pelosi (D-Calif.) and Senate Majority Leader Mitch McConnell (R-Ky.), the Major Cities Chiefs Assn. urged the elected leaders to “move forward with a broad legislative response” that included universal background checks, red flag laws, an assault weapons ban, a ban on high-capacity magazines and other commonsense legislation” to “reduce the scourge of everyday gun violence and the slaughter of innocent people during what feels like never-ending mass shooting events.”