Through Aruna Viswanatha WASHINGTON (Reuters) – Wal-Mart Shops Inc is buying legal professionals to signify more than 30 of its executives concerned about a international corruption investigation, in line with people conversant in the subject, an unusually high quantity that shows the depth of the federal probe. The U.S. Department of Justice is investigating whether or not Wal-Mart paid bribes in Mexico to obtain enables to open new outlets there, and whether executives coated up an internal inquiry into the funds. In recent months, the U.S. government has introduced in a lot of senior Wal-Mart executives for questioning, together with officials from company headquarters in Bentonville, Arkansas, the sources stated. The sources declined to name the executives who have submitted to interviews.