COLLEEN LONG, ERIN B. LOGAN and WILL WEISSERT Associated Press

PITTSBURGH (AP) — Vice President Kamala Harris used a joint campaign appearance with President Joe Biden in the critical swing state of Pennsylvania on Monday to say that U.S. Steel should remain domestically owned — concurring with the White House’s monthslong opposition to the company’s planned sale to Japan’s Nippon Steel. Her comments came during…