The Senate's scheduled on Thursday to take up a school safety bill that overwhelmingly passed in the House.
House members passed the bill on a 407-10 vote on Wednesday.
The bill aims to help schools tighten security to prevent acts of violence. The measure comes as a response to the recent high school shooting massacre at Marjory Stoneman Douglas High School in South Florida.
Democrats support the school safety bill but argued that much more needs to be done to curb gun violence in the U.S.
House Speaker Paul Ryan said the primary focus should be on preventing people who should not have guns from acquiring firearms.