The new numbers were released just hours before the Mexican Foreign Minister was meeting at the White House with Vice President Mike Pence, in the shadow of President Donald Trump's threat to impose tariffs on Mexico starting next week - unless the Mexican government moves to stop the flow of people over the border.
"Right now, there is no deterrence," said Sen. John Cornyn (R-TX), as he urged Democrats to work with the GOP on immigration law changes.
But Cornyn also warned against President Trump's tariff plan, saying consumers would be hit with what the GOP Senator labeled a 'massive tax,' as the President has threatened to start a five percent tariff on all imports from Mexico starting on Monday.
That approach has left Republican Senators frustrated, a reminder of the historic opposition inside the GOP to tariffs.
"Right now it seems to be that every other problem can be solved with another tariff," said Sen. James Lankford (R-OK), who also cautioned the President against such an economic move.
"I would hope that our consumers aren't hit by this," Lankford added.
So far in 2019, U.S. businesses which import goods have paid $18 billion more in tariffs than at the same point in 2018, as the Trump Administration predicts revenue from import duties will go up by over $28 billion, a 68 percent increase over last year.
But for many Republicans, the issue isn't tariffs - but rather finding a way to shut off the flow of migrants into the U.S.
"My colleagues across the aisle must stop ignoring the severity of this situation and come to the table to negotiate a workable immigration plan," said Rep. Michael Guest (R-MS).
"The numbers keep skyrocketing while Washington fiddles," said Rep. Chip Roy (R-TX).