President Joe Biden has been briefed on the incident, the White House said.
House Speaker Mike Johnson posted on X, the website formerly known as Twitter, that he was praying for Trump.
Pennsylvania Gov. Josh Shapiro, a Democrat, said in a statement on X that he had been briefed on the situation and Pennsylvania state police were on hand at the rally site.
“Violence targeted at any political party or political leader is absolutely unacceptable. It has no place in Pennsylvania or the United States,” he said.
— More to come …
