People can debate the need for more or fewer armed guards at American schools, the use of active shooter drills and the wisdom of the idea that maybe even teachers should be packing heat.

But there’s one thing that is indisputable in the available data on gun violence — and the data is limited since until recently the federal government was effectively barred from gathering it.

The indisputable fact is that where there are more guns, there are more gun deaths.

This is true despite Texas Gov. Greg Abbott’s attempt to explain away gun deaths at the elementary school in his state this week by comparing them to gun violence in Chicago.

“I hate to say this, but there are more people who were shot every weekend in Chicago than there are in schools in Texas,” Abbott said on Wednesday, arguing stricter gun laws are not a solution.

There are indeed a horrific number of gun deaths in Chicago each year. CNN has covered the problem.

But there […]