From Judicial Watch:
Mexican drug traffickers help Islamic terrorists stationed in Mexico cross into the United States to explore targets for future attacks, according to information forwarded to Judicial Watch by a high-ranking Homeland Security official in a border state. Among the jihadists that travel back and forth through the porous southern border is a Kuwaiti named Shaykh Mahmood Omar Khabir, an ISIS operative who lives in the Mexican state of Chihuahua not far from El Paso, Texas. Khabir trained hundreds of Al Qaeda fighters in Pakistan, Afghanistan and Yemen and has lived in Mexico for more than a year, according to information provided by JW’s government source.
So, there’s that.