Montana officials are speaking out against a proposed Missoula ordinance that would require background checks on gun buyers before all sales.

The proposed ordinance would require criminal background checks for all gun sales and transfers within city limits, with the exception of transfers between family members or the transfer of antique firearms between collectors.

The Missoulian reports that after the city attorney declared the law legal, Montana Attorney General Tim Fox on Thursday released a one-sentence news release disagreeing. Montana's two congressional Republicans, U.S. Sen. Steve Daines and Rep. Ryan Zinke issued a joint statement urging Missoula to withdraw the ordinance.

Despite the opposition, city officials will hold a public hearing Monday on the ordinance.