Sheriff Richard Mack took the federal government to court back in the 90s, and now he travels the country, sharing his thoughts on the power of the people.
"I don't care who they are. If they don't know the basic fundamentals of the second amendment, then [they should] go home. You are an enemy to freedom and you are an enemy to America, go home," said Mack.
He began his speech to the Tea Party of St. Joseph with a condemning message.
The former Sheriff of Graham County, Arizona rose to fame when he sued the Clinton Administration over the Brady Act, requiring sheriffs departments to issue background checks on anyone looking to purchase a handgun.
"It said the sheriff will work for us whether he likes it or not, and do so at his own expense and if he doesn't do it, we can arrest him for failure to comply. That's how stupid Congress in our country has gotten," said Mack.
The case went all the way to the Supreme Court, where the act was ruled unconstitutional.
"The United States Supreme Court says the federal government has no authority to tell the states or their political subdivisions to do anything," said Mack.
Now, Mack is an advocate for telling the federal government to back off.
"Many sheriffs here in Missouri and across the country and chiefs of police have said 'listen, you're not going to come in to our jurisdictions and attempt to make criminals out of law abiding citizens' and that's exactly what gun control does," said Mack.
Mack will also be speaking alongside Glenn Beck in Kansas City on Sept. 13 and 14 at the Freedom and Liberty Education Summit.