If you live in American public housing or on a Section 8 voucher, and someone in your home can't prove they're a citizen or lawfully eligible, the rules change on 14 December. After that, a family like yours can't keep a cut-down subsidy forever. In the end, either the person without papers moves out or the family's help stops.

Photo: US Department of Housing and Urban Development / Wikimedia Commons, public domain, cropped and resized