There is an agenda to destabilize our society, this is just one part of it.
By placing people who have not assimilated with American culture and who have authoritarian backgrounds, they can be used to sow discord and distrust throughout the population. These same people will be beholden to those who have placed them in authority and will end up being unaccountable to the people. Back in the 60's or 70's, I believe that it was Solzhenitsyn who warned the American people about this issue, as well as many others. Apparently, he was taken very seriously by the left, who are now putting all of his warnings into actions. The rest of the people seemingly said " who cares".