After raging against a key tool in President Donald Trump’s economic arsenal, Senate Democrats quietly green-lit the authority before they left Washington, D.C.Democrats have bashed Trump’s use of tariffs since they were first floated during his campaign in 2024, and have taken every chance to challenge and push back against duties imposed on other countries throughout his second term.But nearly the entire Senate Democratic caucus voted in favor of giving Trump limited tariff authority in exchange for bone-crushing sanctions against Russia. Only nine Democrats, and Sen. Rand Paul, R-Ky., ultim...