While Trump began the address with a call for unity and national healing, much of his speech was his well-known list of grievances and attacks on opponents.
Biden is trailing in opinion polls and is behind in every swing state against Trump. Many Democrats fear he may have virtually no path to victory and that the party needs a new presidential candidate to take on Trump.
The rally in Grand Rapids will be in an indoor arena, unlike the event in Butler, Pennsylvania last weekend, which was outdoors. At that event, the gunman was able to scale the roof of a building outside the Secret Service perimeter before opening fire on Trump, clipping his ear, killing a rally-goer, and wounding several others.
“The Secret Service does not discuss the means and methods used for our protective operations,” the agency said in a statement.
Trump gave a detailed account of his narrow brush with death in his convention speech on Thursday, telling the audience that he was only talking to them “by the grace of Almighty God.”