By the sounds of it, Colorado is being targeted with an attempt to set up loopholes that will allow the U.S. Secret Service to arrest and remove an elected sheriff for refusing to enforce the law, or anyone breaking the law. This means ALL Secret Service including uniformed division officers, physical security technicians, specialists, and other 'special officers'.

In short they want to,

…establish federal authority police powers in a State, enabling an enforcement arm reporting directly to the president (Secret Service). It would enable the president / executive branch to theoretically override the actions and preventative measures that are now being taken by many States throughout the country who are trying to preserve 2nd Amendment gun rights and who are prohibiting the enforcement of unconstitutional law passed by Congress or pushed by executive order.