As the White House keeps a tight lip on whether it plans to intervene in the looming port strike, the nation's business leaders are urging President Obama to invoke Taft-Hartley in order to ensure that 14 U.S. ports remain open. Unionized dockworkers have threatened to strike at 14 ports around the U.S. beginning this weekend, with the potential hit to the economy estimated at over $1B per day.