Table of Contents Many State Capitols Have Security Holes Armed men stand on the steps of the Michigan Capitol on Jan. 6. Until imposing a ban Monday, Michigan was one of the 20 state capitols where guns can be openly carried inside. Paul Sancya The Associated Press Editor’s Note: This story has been updated to reflect that Nye County is in Nevada, not Arizona, to reflect that Michigan banned guns in the statehouse Jan. 11, and to add additional new information. State capitols around the country remain on high alert following the violent insurrection at the U.S. Capitol and as new threats surface online, but with less than two-thirds of them employing metal detectors, and about 20 statehouses specifically allowing guns inside, there are many security gaps that rioters could exploit.