"It can't wait, it's a humanitarian crisis," Appropriations Committee Chairman Hal Rogers, R-Ky., said before the vote was canceled, as he pleaded with fellow Republicans to support the legislation. "This bill is an urgently needed bill."
But even significant concessions by leadership weren't enough to secure support from a small band of tea party lawmakers reluctant to give money to President Barack Obama without taking steps to rein in his executive authority on immigration.
Those lawmakers were goaded on by firebrand Sen. Ted Cruz, R-Texas, who summoned them for pizza Wednesday evening to strategize against the bill.
Faced with weak conservative support for the $659 million border bill, GOP leaders agreed late Wednesday to schedule a second vote on legislation to block Obama from extending deportation relief to more immigrants here illegally, beyond the 500,000 that have already benefited from a program he created.
That seemed to win over some lawmakers by Thursday morning, but as the day progressed conservative lawmakers and outside groups declared the measure insufficient.
Then, just before the vote on the border bill was to begin, there was an unexplained pause in action on the House floor, and suddenly the reading clerk called up an unrelated highway bill instead.
Minutes later, the border bill disappeared from the House schedule for the day, and Boehner and other House leaders issued a statement saying: "This situation shows the intense concern within our conference and among the American people about the need to ensure the security of our borders and the president's refusal to faithfully execute our laws. ... We will continue to work on solutions to the border crisis and other challenges facing our country."