US President Donald Trump earlier today:

"Jim Kopenhaver, a true American patriot, has passed away - a tremendous loss! More than two years ago in Butler, Pennsylvania, a crazed gunman tried to suffocate our America First movement. Instead, Jim and so many other wonderful patriots who love our country, stood united in defense of our shared values of freedom, liberty and justice, while protecting his family, and justice. Courage, continues to fight, fight, and keep a positive spirit despite the unimaginable difficulties of love and devotion, our hearts and prayers are with the Copenhaver family, especially his amazing wife Marian God.