Rep. Chip Roy, R-Texas, has objected to a $19.1 billion disaster relief bill that was expected to sail through Friday, an unexpected move that has stalled the measure from becoming law. 

The bill was expected to pass the House under a unanimous consent process, to which any member may object. It is likely to be revisited when lawmakers return June 3. 

"I'm here today primarily because if I do not object Congress will have passed into law a bill that spends $19 billion of taxpayer money without members of Congress being present here in our nation's capital to vote on it," Roy said on the House floor.

"Secondly, it's a bill that includes nothing to address the clear national emergency and humanitarian crisis we face at our southern border," Roy said. 

Democrats' next move was not immediately clear. Rep. Steny Hoyer, D-Md., the House majority leader, said the party will "take action as early as next week" during an informal session. 

A companion measure passed in the Senate on Thursday. The bill included about $1 billion in funding for Puerto Rico relief. President Donald Trump has declared the situation on the southern border a national emergency and had previously sought to include border-related funding in the bill. He later dropped the demand. 

Roy's last-minute announcement immediately drew the fury of House Democrats. 

"After President Trump and Senate Republicans delayed disaster relief for more than four months, it is deeply disappointing that House Republicans are now making disaster victims wait even longer to get the help they need," House Appropriations Committee Chairwoman Rep. Nita Lowey, D-N.Y., said in a statement. 

House Speaker Nancy Pelosi, D-Calif., decried the move as "sabotage." 

Roy previously served as the chief of staff to Sen. Ted Cruz, R-Texas. 

-- CNBC's Dan Mangan and Christina Wilkie contributed to this report.