Houston-based Vinson & Elkins LLP is one of 34 law firms nationwide that have pledged to help immigrant families. Hunton Andrews Kurth LLP - which was formed earlier this year through the merger of Houston-based Andrews Kurth Kenyon LLP and Virginia-based Hunton & Williams LLP - as well as Dallas-based Haynes and Boone LLP and several other firms with offices in Texas also signed the pledge to "help reunify families and ensure representation for legitimate asylum seekers." The list was...