Watch the first Brown-Renacci U.S. Senate debate

CLEVELAND — Candidates in Ohio's U.S. senate campaign have sparred over health care, approaches to climate change, tariffs and gun control in their first of three debates.Republican U.S. Rep. Jim Renacci (reh-NAY'-see) on Sunday repeatedly criticized incumbent Democrat Sherrod Brown as being a Washington insider, citing Brown's connections to Democrat Sen. Chuck Schumer multiple times.Renacci has aligned himself closely with President Donald Trump, whose administration urged Renacci to ent