Watch how Texas Senate filibuster began

Sen. Wendy Davis, D-Fort Worth, speaks as she begins a filibuster in an effort to kill an abortion bill, Tuesday, June 25, 2013, in Austin, Texas. The bill would ban abortion after 20 weeks of pregnancy and force many clinics that perform the procedure to upgrade their facilities and be classified as ambulatory surgical centers.  (AP Photo/Eric Gay)

    Just Watched

    Watch how Texas Senate filibuster began

Texas state Sen. Wendy Davis launched an effort to block an abortion bill passed by the state House.