Four months later, not only is the tent city still operating, it has exploded in size: it now houses about 1,500 children, up from about 330 in June. The shelter’s expansion is still due in part to the Trump administration, specifically a new requirement that the FBI perform a fingerprint background check on adults who want to sponsor an unaccompanied child.

With midterm elections just a few weeks away, and with Hispanic voters still largely an untapped resource, Democrats are trying to highlight the GOP’s ties to the swelling shelter in the West Texas desert. On Monday, U.S. Reps. Joaquin Castro, D-San Antonio, and Joe Kennedy III, D-Massachusetts, toured the site operated by BCFS Health and Human Services, a San Antonio-based nonprofit.

On a conference call with reporters, Castro called the Trump administration’s role in the situation “morally bankrupt,” and Kennedy labeled it “inhumane.”