WASHINGTON/MEXICO CITY (Reuters) - The text of the Trump administration’s trade agreement with Mexico is due to be released on Friday, launching a contentious approval process as pressure mounts on Canada to sign a revamping of the trilateral NAFTA pact. FILE PHOTO: A car hauler heading for Detroit, Michigan, drives on the lane to Ambassador Bridge in Windsor, Ontario, Canada, April 28, 2017. REUTERS/Rebecca Cook/File PhotoMexico’s Economy Minister Ildefonso Guajardo was scheduled to present the long-awaited document to Mexico’s Senate at 7 p.m. EDT (2300 GMT), Mexican . . .