By Dave Graham MEXICO CITY (Reuters) -Mexican officials are concerned the repeal of a measure adopted under the Trump administration to tighten the U.S. border will encourage a spike in migration and more profits for criminal gangs unless Washington does more to help mitigate the impact. The United States has said it will on May 23 end the so-called Title 42 order issued during the coronavirus pandemic in 2020 that has effectively shut down the U.S. asylum system at its shared 2,000-mile border with Mexico. Title 42 has allowed U.S. authorities to quickly expel migrants to Mexico, and its remo…