The former front-runner's support had fallen to near zero percent in polls. He cited money issues when he announced the end of his campaign.
President Biden's visit to Pittsburgh marks the second of three stops on a swing through the key battleground state of Pennsylvania this week.
The former vice president said Trump is seeking to "marginalize the cause of life" by refusing to support a national abortion ban.
He made the announcement in a video released on his social media platform Truth Social on Monday morning.
Israel had promised to retaliate for Iran's Saturday attack, in which Iran launched hundreds of drones and missiles.
In a message on X, Hirsi wrote she is a Columbia Students for Justice in Palestine member and said she was suspended from Barnard College on Thursday.
The chain says its cold drinks and the cups they're served in are surging in popularity. A redesigned cup could use as much as 20% less plastic.
