"Families are scared, and it is our duty to come together and get something done that will help restore their sense of safety and security in their communities," a group of 20 senators said in a statement that outlined their plan.
Ten of the signers were Republicans – the number needed to break a GOP filibuster on the package.
The group said its plan "increases needed mental health resources, improves school safety and support for students, and helps ensure dangerous criminals and those who are adjudicated as mentally ill can’t purchase weapons."