ATF to Montana: 'You will respect our authoritah!' The Montana Firearms Freedom Act made it so that no federal regulations would apply to any firearms that do not leave the state of Montana but now the federal government basically says that the law is null and void because federal law supersedes state law. However, the Constitution is clearly on the side of the state of Montana in this instance. The Constitution allows the federal government to regulate interstate commerce not intrastate commerce, and doesn't allow them to regulate firearms at all. I hope that Montana doesn't back down because they need to protect their sovereignty from the federal government.