U.S. Sen. Chuck Grassley announced in the wee hours of Friday that he intends to seek an eighth term in 2022. The 88-year-old Iowa Republican, who has been in the Senate since 1981, posted his plans on Twitter shortly after 4 a.m. CT, along with a video of him going out for his daily jog. "It’s 4 a.m. in Iowa so I’m running," Grassley wrote. "I do that 6 days a week. Before I start the day I want you to know what Barbara and I have decided. "I’m running for re-election—a lot more to do, for Iowa. We ask...