The United Steelworkers in Des Moines received the Democratic candidate with enthusiasm, as unions on the national level largely support Hillary ClintonNot long ago, the best Bernie Sanders could hope for from US trade unions was to slow the inevitable tide of their endorsements for Hillary Clinton.At a crunch meeting last July with labor leaders at the AFL-CIO summer conference in Maryland, the Vermont senator impressed many with his opposition to trade liberalisation, but was seen as too risky a bet by most of Washington’s union power-brokers.