From December: the White House and Senate Democrats are currently entertaining drastic limits on asylum and an expansion of detention beds and deportations.
While the negotiations in Congress are ongoing, lawmakers have signaled they want to reach a deal in the next few weeks.
In Border Patrol's Del Rio sector, which includes Eagle Pass, the agency has processed as many as 4,000 migrants in 24 hours in recent days, a record high for the area, internal data show.
"Illegal border crossings have always happened," said Eagle Pass fire chief Manuel Mello, who started as a local firefighter in the 1990s. "Groups of 10, 12 — that was a large group. But now you see 3,000 and 4,000 in one day. I never thought something like this could happen."