There are multiple places along the US Mexican border that are both easy to cross and don't have any sort of fence. Usually the large fence just stops. If you cross in those locations you are immediately asked to wait in line for a bus to be taken to a detention center where you are given an I-94 and an NGO funds your bus ride to New Jersey and New York where you will work under the table for cheap and skip your immigration court hearing. If you DON'T want to get caught, it is harder, since the border patrol knows where the crossing areas are and the terrain is more hostile although less patrolled.

Someone getting deported 6 times probably doesn't go through those easy points you mentioned. I imagine if youve been physically deported by the government, if they find you again at a point like that, you get sent back? Yet if someone can come back in 6 times, I have to assume even the harder routes aren't THAT hard.

  The guy that shot Kate in SF 

Yeah maybe the park ranger shouldn't have left his weapon around for strangers to play with it. Create less enticement for crime and you'll see less crime.

I don't think leaving a weapon somewhere is an enticement to crime. If I saw a weapon loose somewhere, I would report it to my local police. If I was an illegal, I would ignore it. If I was a shady illegal, I might take the gun and try to sell it or keep it for personal protection. You know what I wouldn't do? Go pointing it anywhere around a group of people.

The crime was playing with a gun that accidentally went off thus leaving a weapon laying around was absolutely enticement.

Playing with a gun around a crowd of people.. that you brought with you to a crowd of people...

It's not like he found the gun THERE. He didn't even find it that day. He was just playing with a random gun that wasn't his, in a crowd of people. Ya, accident.