A bitter partisan battle is developing among members of the House committee investigating the 2012 Benghazi attack chaired by Rep. Trey Gowdy and Democrats bent on limiting access to witnesses. And a potential clash between Gowdy and former Secretary of State Hillary Clinton is waiting in the wings.The Democratic members, headed by MarylandÂs Elijah Cummings, seek veto power over the committeeâs subpoenas and object to GowdyÂs examination of witnesses by only the GOP members.The Democrats would rather debate the matter than hear what the witnesses have to say.Gowdy, a former South Carolina prosecutor, knows that giving Democrats veto power over...