Trump’s Department of Housing and Urban Development is proposing a new rule to keep illegal immigrants from skirting current rules that prevent those immigrants from accessing housing subsidies.

“We need to make certain our scarce public resources help those who are legally entitled to it,” department Secretary Ben Carson said in a statement. “Given the overwhelming demand for our programs, fairness requires that we devote ourselves to legal residents who have been waiting, some for many years, for access to affordable housing.”