I appreciate James V. Grimaldi’s and Sari Horwitz’s reporting on gun policy issues for The Post, including their July 12 news story “4 border states face new rule on gun sales.” But I was disappointed to see them call “aggressive and controversial” the measure that the Obama administration plans to implement, requiring licensed gun dealers in states bordering Mexico to report to the Bureau of Alcohol, Tobacco, Firearms and Explosives when they make multiple sales of assault weapons to the same individual within five days.

Federal law already requires similar reporting for multiple sales of handguns. The new measure applies to only four states for assault weapons being used to kill thousands of people and destabilize an entire country. The vast majority of Americans, including gun owners, favor policies designed to keep guns out of the hands of dangerous people, especially when the policies impose no barrier to law-abiding citizens.

The measure being put in place is not especially aggressive or controversial. Rather, it is a modest measure that is politically difficult because of politicians’ reticence to stand up to a gun lobby whose positions are often out of step with those of gun owners.

Daniel W. Webster, Baltimore

The writer is co-director of the Johns Hopkins Center for Gun Policy and Research.