Personal responsibility to keep those borders wide open and keep the dope flowing? Right!
The premise behind open borders is that free people should be allowed to travel unencumbered. If it were not for our vast welfare state put into place by republicans and democrats, immigrants would have no reason to be here unless they wanted to legally work. We already have open borders. At least under a liberarian government, the people coming here wouldn't be freeloading at the expense of taxpayers.