The cartel running in the States has been a problem for decades, her vague, open-ended complaints without proposed solutions seem largely political.
Sending a few more cops into the forest or deserts to search for Mexican cartel operations is entirely futile and not at all cost effective in the “war on drugs”, but people are afraid of foreigners and afraid of drugs that they aren’t educated about, so it’s an easy topic to bang the drum about.
Republicans have been scaring people about drugs for 50 years in order to get elected, without making an iota of headway solving the problem.