Almost 10 years ago, after the massacre at Sandy Hook, I wrote a letter to my congressman, imploring him to do all he could to put an end to gun violence.

Of course, @keithellison wrote back. Keith’s letter acknowledged the uphill battle in a divided Congress. But he never stopped working for reform, cosponsoring numerous gun violence prevention bills and, as Progressive Caucus cochair, setting goals like an assault weapons ban and universal background checks.