"The Justice Department inspector general has found evidence that an FBI employee may have altered a document connected to court-approved surveillance of a former Trump campaign adviser..."

"... but has concluded that the conduct did not affect the overall validity of the surveillance application, according to U.S. officials familiar with the matter. The person under scrutiny is a low-level FBI lawyer who has since been forced out of the agency, according to the officials, who spoke on the condition of anonymity to discuss material that has not yet been made public. They declined to identify the lawyer.... That conduct did not alter Horowitz’s finding that the surveillance application of former Trump campaign adviser Carter Page had a proper legal and factual basis, the officials said. [Inspector General Michael] Horowitz has been exploring various aspects of the Russia probe but was focused in particular on applications the FBI filed with the Foreign Intelligence Surveillance Court to monitor Page’s electronic communications.... Separately, Attorney General William P. Barr tapped U.S. Attorney John Durham to explore the origins of the FBI probe and U.S. intelligence agency activities aimed at the Trump campaign, and Durham is expected to pursue the allegation surrounding the altered document to see whether it constitutes a crime, people familiar with the matter said.... Conservatives have alleged that a medley of wrongdoing occurred during the investigation, which was eventually taken over by special counsel Robert S. Mueller III, and they are likely to seize on any criticism that Horowitz directs at those involved in the probe...."

WaPo reports.