The House of Representatives did not bring to a final vote the bill crafted by the Republican majority for $659 million in supplementary funds to handle the border crisis.
The Republican leadership in the House canceled the vote amid divisions in their own ranks.
The new Republican majority leader, Kevin McCarthy, said that new votes might be "possible" in the coming hours although no decision had been reached as yet.
The Republicans' most conservative wing, those lawmakers aligned with the so-called Tea Party, opposed the bill, which did not have enough Democratic support for approval either, and thus it was not forwarded to the Senate for consideration.
The upper chamber is also scheduled to vote later on its own version of the bill, which allocates some $2.7 billion for the border issue, $1 billion less than President Barack Obama requested to deal with the influx of unaccompanied and undocumented minors from Central America.
The Republican proposal earmarked the bulk of the supplemental funds for strengthening border security and also included a modification of the 2008 people trafficking law to accelerate deportations of the Central American children.
If neither chamber reaches an agreement on the matter, the Department of Homeland Security in the coming weeks will have to restructure its funding to deal with the crisis, which has seen almost 60,000 migrant children arrive unaccompanied on the southern border. EFE