By THE PULSE NEWS MEXICO STAFF Opposition party mayors, who make up the Mexico City Mayors Union (Unacdmx), have, in the last six months, filed 22 formal charges of constitutional violations by the capital’s government — run by Governor Claudia Sheinbaum of President Andrés Manuel López Obrador’s (AMLO) leftist National Regeneration Movement (Morena) party — before Mexico’s Supreme Court (SCJN).