The success or failure of Trade Promotion Authority (TPA) in the U.S. Congress becomes more nuanced as senators try and add amendments that may or may not get tossed later in a conference with the House.The success or failure of Trade Promotion Authority (TPA) in the U.S. Congress becomes more nuanced as senators try and add amendments that may or may not get tossed later in a conference with the House. Over 140 amendments have been filed, and the bill has already been changed to make religious freedom a new negotiating objective. Opponents like Senator Elizabeth Warren (D-Massachusetts) appear determined to make this legislation a stinker.The effort is getting no help from Democratic presidential candidate Hillary Clinton. When discussing...