Dr. Mehmet Oz takes part in a forum for Pennsylvania Republican U.S. Senate candidates in Camp Hill, Pa., on April 2. Oz recently got the endorsement of former President Donald Trump over his chief rival for the nomination, David McCormick. Matt Rourke/AP hide caption

Don Gonyea
President George W. Bush and Russian President Vladimir Putin speak during a visit to Crawford High School in Crawford, Texas, on Nov. 15, 2001. The appearance wrapped up a summit of the newly elected presidents in Texas. Ronald Martinez/Getty Images hide caption
With Bush in 2001, Putin sought to charm students at a rural Texas high school
Putin warned against allowing atrocities to happen in 2001 Texas town hall
Ohio Republican U.S. Senate candidates Mike Gibbons (left) and Josh Mandel exchange heated words at a forum put on by FreedomWorks on March 18 outside of Columbus. The two have polled atop the contested GOP primary. Andrew Spear/Getty Images hide caption
In Ohio's GOP Senate race, there are Trump wannabees — but no Trump endorsement
Former President Donald Trump welcomes Rep. Mo Brooks, R-Ala., a candidate for U.S. Senate, to the stage during a rally in Cullman, Ala., on Aug. 21, 2021. Trump on Wednesday pulled his endorsement of Brooks, who's been struggling in polls. Chip Somodevilla/Getty Images hide caption
The Republican Senate primary is heating up as candidates tout pro-Trump cred
Pennsylvania Lt. Gov. John Fetterman, who's considered the early front-runner in the Democratic primary for the state's open U.S. Senate seat, talks with a voter during a campaign stop at the Mechanistic Brewery, in Clarion, Pa., on Feb. 12. Keith Srakocic/AP hide caption