Mexico-U.S. border tour necessary for immigration reform, security

      Membersof the so-called Gang of Eight are moving their negotiations on immigrationreform to the Arizona-Mexico border.

      RepublicanSens. John McCain and Jeff Flake of Arizona are expected to tour the bordertoday with Democratic Sens. Chuck Schumer of New York and Michael Bennet ofColorado.

      McCainsays touring the border is crucial to understanding security issues.

      The tripcomes as Congress is in recess and as the lawmakers put the finishing toucheson a bill designed to secure the border and put 11 million illegal immigrantson a path to citizenship.

      Immigrationproponents say the group needs to introduce legislation soon, while someRepublican lawmakers complain the process has moved too quickly.

      PresidentBarack Obama has urged Congress to pass immigration reform this year.