For organized labor, if there's anything better than a federal takeover of health insurance, it's a federal takeover of health insurance with a generous tax exemption for union-sponsored plans. Union leaders, led by AFL-CIO President Richard Trumka (see photo), this week gave the country a first-hand lesson on how to play behind-the-scenes political hardball. Yesterday, following a three-day marathon negotiating session, the nation's top labor officials announced they had reached an agreement to delay introduction of a federal excise tax on high-cost union-negotiated health insurance plans. While a number of Republicans are calling the deal a political giveaway, union leaders are spinning it as another example of doing right by working Americans.