thune-johnThe latest federal gun-law proposal has been branded a new “lowest common denominator” for gun ownership by many police organizations, mayors, and crime-victims groups, reports The Washington Post. But the relatively weak GOP has recently managed to prod Senate Dems, including Colorado’s Mark Udall and Michael Bennet, to back looser rules on firearms in national parks, part of the unrelated credit-card bill signed by President Barack Obama. The latest measure, by South Dakota Republican Senator John Thune, would allow people to carry concealed guns across state lines if they are permitted to do so. Two top targets are Udall and Bennet, according to the Post, which writes that Udall told reporters earlier this week, “I would imagine there would be some concern back home,” but that he would also take a second look at Colorado’s concealed gun law.

Denver Mayor John Hickenlooper is among roughly 450 U.S. mayors to sign onto an ad campaign opposing Thune’s plan, according to 9News, because it would undermine the authority of localities to issue concealed weapons permits. Colorado recognizes permits from other states if the permittee is the resident of a state that recognizes Colorado permits and is older than 21 years. Meanwhile, guns seized by police are causing a stir in Colorado Springs, where some city officials want to sell the guns to make money. Those who oppose the idea fear the weapons will end up on the streets again, writes the Gazette.