Amy Walter: “From the moment he descended the golden escalator, President Donald Trump has defied the rules and laws of political gravity like no other politician in our lifetime.”“Trump’s staying power in our politics — even, astonishingly, despite the January 6 attack on the Capitol — gave the president the confidence and latitude to pursue unpopular policies and blow off scandals that would have sunk any of his predecessors.”“But now, the economic consequences of his sweeping tariffs and the war in Iran have done the one thing all the controversies of his first term were never able to do: splinter his coalition and sink his approval ratings to all-time lows.”