yes, let invaders actually in to your home.
So when the signal comes to take over, they can just kill you all in your sleep, and then they have a free house.
It’s a great invasion plan!
1) infiltrate the government for decades.
2) as government officials, force the country to accept ‘migrants’
3) Force the people to house ‘migrans’
4) When the time comes, give the word to kill all their hosts
5) Profit.
On a related note, as I've seen McDonald's pop up in every corner of the world I've come to imagine that in the basement of each one is a crack team of Navy SEALS, awaiting the signal to commence the takedown of the regime in whatever country they are in. It's the only explanation I have for how they have spread so far across the globe.