If you're concerned about gun violence in America this news from The Washington Post will lift your spirits:

A new report from a national coalition of mayors urges President Obama to adopt dozens of reforms to help curb gun violence, including steps to crack down on problems at gun shows and the creation of a federal interstate firearms trafficking unit. 

The "Blueprint for Federal Action on Illegal Guns," a copy of which was obtained by The Washington Post, presents 40 recommendations that "would dramatically improve law enforcement's ability to keep guns out of the hands of criminals -- and, in doing so, save innocent lives." 

The strategies outlined by the Mayors Against Illegal Guns, a bipartisan group of about 450 mayors nationwide, focus on the federal Bureau of Alcohol, Tobacco, Firearms and Explosives. The agency, which has been sent a copy of the report, declined to comment. 

"Implementing these recommendations would achieve a goal that all participants in the gun debate support: enforcing laws already on the books," says an accompanying letter signed by the coalition's co-chairmen, Mayors Thomas M. Menino (D) of Boston and Michael R. Bloomberg (I) of New York. 

According to the report, hard work by ATF field agents has "been undermined by congressional restrictions, inadequate resources, and a lack of leadership from federal officials in Washington." 

The proposed changes could be accomplished within existing laws through agency reforms, regulatory moves and better funding, the report said. The strategies grew out of academic and government research, an analysis of firearms prosecutions and talks with government and law enforcement officials.

The NRA is always saying we need to enforce the laws America already has on the books before enacting new gun control measures.

Just how long it will take for them to change their tune now that 450 mayors are advocating just what the NRA has called for.