BBC: President George W Bush is to make a personal appeal to his own party's senators in an attempt to win support for controversial immigration reforms.
He will attend a weekly policy lunch with Senate Republicans for the first time in six years to push his case.
A proposed immigration law bill stalled last week after the Senate failed to vote to make progress on the measure.
White House spokesman Tony Snow said Mr Bush had to convince conservative sceptics that it was a sound bill.
Most Democrats voted in favour of proceeding with the legislation in the Senate last week, whereas only a handful of Republicans backed the move.
This followed a series of amendments to the proposed bill, which undermined a fragile bipartisan compromise.
The bill would have tightened border controls, but given 12 million illegal immigrants already in the US a way to legal status and citizenship. Bush to seek immigration support (more)
BBC:
Dutch MPs back immigrant amnesty
Mark Alexander
