So they put the big red X on their own door to condemn their own home?
The big red "X" (usually put on by county officials) means they're not supposed to be living there -- the house is uninhabitable. "Aid workers" don't visit people who aren't supposed to be lving in a condemned dwelling, but that's too logical for this reporter.
They should have gotten a visit from specific "local officials" though -- to tell them to get out. It's a little thing called code enforcement/public safety -- but that's usually ignored when it comes to illegal immigrants. Mustn't discriminate.