By Sarah N. Lynch WASHINGTON (Reuters) -The FBI arrested Republican Ryan Kelley, a candidate for Michigan governor, on Thursday for misdemeanor charges in connection with the Jan. 6, 2021, U.S. Capitol riot by supporters of then-President Donald Trump. An FBI agent’s sworn statement said Kelley, 40, was captured on video standing in a crowd of people who were “assaulting and pushing past law enforcement officers” at the Capitol. Kelley is one of five people seeking the Republican nomination to challenge Democratic Governor Gretchen Whitmer in a November election. He serves as an appointed plan…