There were about 700 people in the Matamoros camp before the U.S. started admitting them. At the current rate of crossings, the camp could be cleared out in days. Any decision to close it will be made by Mexican authorities.

Emptying the camp in Matamoros would eliminate a symbol of Trump’s immigration crackdown and count as an early success for Biden, who aims to undo his predecessor’s most draconian anti-immigrant policies. The move comes as the new administration prepares for a battle to pass a sweeping immigration reform bill and as it draws criticism for reopening a Trump-era shelter for migrant children in Texas.

Meanwhile, the number of migrants crossing the southern border is surging. Border agents have detained 70,000 people illegally crossing per month since October, a sharp increase from a year ago.