HARRISBURG, Pa. (AP) — 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 and incumbent Democratic Sen. Bob Casey in a state Democrats can’t afford to lose in 2024. Biden, who is seeking a second term as president, has been criticized from the left for being too...