House Minority Leader Nancy Pelosi (D-CA) sent a letter to House Speaker Paul Ryan (R-WI) Monday following the largest mass shooting in U.S. history, which occurred at a concert in Las Vegas late Sunday night. Pelosi said, in response to the tragedy, that Congress must pass legislation to strengthen background checks and establish a “Select Committee on Gun Violence to study and report back common sense legislation to help end this crisis.”

“Today, our nation woke up to news of the worst mass shooting in our history,” Pelosi wrote, “claiming the lives of at least 58 innocent men and women in Las Vegas. Nearly 12,000 Americans have been killed by guns in 273 mass shootings in 2017 – one for each day of the year. On average, more than 90 Americans lose their lives to gun violence every day, a daily toll of heartbreak and tragedy in communities across America.”