evidence: President Joe Biden said for the first time Wednesday he would halt some shipments of American weapons to Israel – which he acknowledged have been used to kill civilians in Gaza – if Prime Minister Benjamin Netanyahu orders a major invasion of the city of Rafah. [...] Biden’s public linking of American weapons shipments to Israel’s conduct could widen a rift between himself and Netanyahu, with whom he spoke by phone on Monday. That conversation came as Israel ordered the evacuation of tens of thousands of civilians from Rafah and launched strikes near border areas of the city. [...] Asked what advice his former boss, President Barack Obama, had provided in their conversations about the race, Biden said it was simply to "keep doing what I’m doing."