Some Arab American leaders in Michigan are expressing cautious optimism about Vice President Kamala Harris' presidential campaign after months of outrage over President Joe Biden's handling of the Israel-Hamas war. They say they have been in listening mode as both parties seek to win favor with what has been a strong Democratic constituency. Leaders are watching closely for signals that Harris will be more vocal in pressing for a ceasefire. Former President Donald Trump's campaign has reached out to local Arab American leaders to seek their support. That effort is complicated by his history of anti-immigrant rhetoric and the policies of his administration when he was president.