The increasingly impressive Roosh V offers up excellent advice for Christians living during the final days of the US Empire. Most of it is about hunkering down in self-reliance. However, he does touch on Biblical support for getting away:
A lot of men have asked for my thoughts about leaving the country and going to a land where Christians are least likely to be persecuted in the near future (Russia is often mentioned). There is even scriptural support for fleeing persecution.
“Now brother will deliver up brother to death, and a father his child; and children will rise up against parents and cause them to be put to death. And you will be hated by all for My name’s sake. But he who endures to the end will be saved. When they persecute you in this city, flee to another.” —Matthew 10:21-23
Be mindful that one might not want to wait until overt persecution commences to make the hard choices.