President Claudia Sheinbaum said the U.S. labeling of drug cartels as foreign terrorist groups “cannot be an opportunity for the United States to invade our sovereignty.”

Mexico President Claudia Sheinbaum said Thursday she will propose constitutional reforms aimed at protecting Mexico’s sovereignty after U.S. President Donald Trump’s administration designated six Mexican drug cartels as foreign terrorist organizations.

The US decision has sparked concern in Mexico, with officials fearing it could be a precursor to potential military action.