House Democrats released evidence that he took in at least $7.8 million from foreign entities while in office, engaging in the kind of conduct the G.O.P. is grasping to pin on President Biden.
The killing of a top Hamas leader in Lebanon and mysterious twin explosions in Iran heighten fears of a regional war that could draw in the United States.
The petition came in response to a Colorado Supreme Court ruling that the former president had engaged in insurrection and was ineligible to hold office under the 14th Amendment.
Col. Earl Matthews, the top lawyer for the D.C. National Guard during the assault on the Capitol, said in a whistle-blower complaint that he was punished for contradicting the testimony of two top generals.
The 38-year-old entrepreneur has maintained a grueling schedule, but questions about the goals of his candidacy are mounting with less than two weeks before the caucuses.
The visit by the speaker and scores of House Republicans comes as the G.O.P. seeks to increase pressure on President Biden and Democrats to agree to severe new border policies.
The president will speak at Valley Forge on the anniversary of the Jan. 6 Capitol riot, and later at a South Carolina church where a white supremacist killed nine people.
It is the first state to give Robert F. Kennedy Jr., a noted vaccine skeptic who is running for president as an independent, a spot on its 2024 ballot.