Burton Pushed toward New Vote on Immunity

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GOP leaders late yesterday pressured Rep. Dan Burton to continue his battle with the White House to win immunity for four crucial witnesses in his campaign-finance probe, hours after he announced plans to give up his fight.

Publicly, leaders accused the White House of hiding the truth and attacking the messenger - in this case, Mr. Burton.

"There's been a routine process by this White House to cover up the truth by attacking people looking into illegality," said House Speaker Newt Gingrich.

But privately, Republican leaders criticized Mr. Burton for his handling of the probe, an investigation that has been plagued by embarrassing missteps along the way - from mistaken identities of key witnesses to …