And this is a town that everybody agrees, law enforcement, Border Patrol, residents on both sides, is a staging area of illegal drugs and illegal aliens.
The town is a gathering place for illegal aliens 
( z1 town :location-of ( z2 gather :ARG0 ( z3 person :ARG1-of ( z4 legal :polarity - ) :ARG1-of ( z5 alien ) ) ) )