I'm doing research for a script I'm writing. Check out my introductory post for more details on me and my project.
Obviously, there are regulations regarding flying across the Mexican border. Those are fairly easy to look up, and not what I'm interested in. What I want to know is what kind of measures are out there stopping people from just flying across the border? Are there radar stations set up watching for people doing just that? If a drug smuggler wanted to fly across the Mexican border in a rural area and land in a private airstrip, would he get most likely get caught or would be probably get away with it?
Assuming there are measures like radar in place, what ways around that are there? Is the old "flying under the radar" trick they always use in stories realistic? From what I understand that would mean flying within 200 or so feet of the ground where radar tends to pick up a lot of random interference and isn't good at picking out objects. What about flying through a canyon across the border? Is that plausible?

