Upset about the investigation into Russian interference in last year’s election, President Trump sought relief from James B. Comey, then the F.B.I. director. By Mr. Comey’s account, Mr. Trump asked him to help “lift the cloud.”
But thanks to Mr. Trump’s own actions, the cloud darkened considerably on Thursday and now seems likely to hover over his presidency for months, if not years, to come.
Rather than relieve the pressure, Mr. Trump’s decision to fire Mr. Comey has generated an even bigger political and legal threat. In his anger at Mr. Comey for refusing to publicly disclose that the president was not

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