One of the lawyers representing a member of the intelligence community, who filed a complaint against President Donald Trump, sent a letter to the White House trying to get lawyers there to stop Trump from attacking the whistleblower.
Trump has repeatedly maligned the person, who currently remains anonymous and was found to have indications of political bias against Trump, over the complaint and has said a number of times that the person should be identified and questioned. The whistleblower complaint itself relied on secondhand information and media reports.