A foreign soldier on sovereign US soil armed and in uniform has a life expectancy of about 2 blocks. If the UN sent troops to the US they might be here for a few days. When it gets rough the UN pulls out. I voted "Never" in the poll. I think they know what would happen if they ever tried it.
USAF Retired, CATM, SC CWP, NH NR CWP, NRA Benefactor
To preserve liberty, it is essential that the whole body of people always possess arms, and be taught alike, especially when young, how to use them... -- Richard Henry Lee, 1787