Missouri senators have passed legislation that seeks to nullify some federal gun laws and punish federal agents who enforce them.
The Senate's 23-8 vote Wednesday sent the bill to the House, which previously passed a similar measure. Lawmakers must now agree on an identical version by mid-May.
The Senate bill would declare "null and void" past, current and future federal laws considered to be infringements on gun rights.
House and Senate backers are at odds over the punishment for federal agents who enforce some gun control laws.
The House version would allow Missourians to sue federal agents if they think their gun rights have been infringed. In addition to those civil penalties, the Senate bill would bar those agents from future careers in state law enforcement.