Seriously why do you want to support an open border?  

Here’s just one example of why it’s BAD bad.  

And before anyone screams “your link is old” it’s only gotten worse since then.

http://wpde.com/amp/news/nation-world/cartels-making-13-billion-a-year-off-smuggling-migrants-through-border-nyt-report-says-mexio-immigrants-coyote-texas

Soooo why do you want this soooooo much?