David McCormick, a Republican candidate for U.S. Senate in Pennsylvania, speaks during a discussion with military veterans organized by his campaign at an American Legion hall, Jan. 18, 2024, in Harrisburg, Pa. (AP Photo/Marc Levy) HARRISBURG, Pa. – A Republican running for the U.S. Senate in Pennsylvania is escalating criticism of Democrats over the Israel-Hamas war and has traveled to the Israel-Gaza border to make the case that the Biden administration hasn't backed Israel strongly enough since the Oct. 7 attack by Hamas. The criticism by GOP candidate David McCormick reflects the delicate political challenge facing both President Joe Biden...