Senator Dianne Feinstein has requested interviews and documents from Dan Scavino and Brad Parscale.
The press secretary responded to the president's tweeting about the "Deep State Justice Department."
He has previously been negative of both the agency and the e-commerce company.
A judge granted his request to leave the house for the holiday.
He was one of at least eight people at a controversial June 2016 Trump Tower meeting.
Public figures including John Brennan and Joe Scarborough have said they donated.
Organizers are planning demonstrations around the country in the event the special counsel is terminated.
North Koreans are commemorating 100 years since her birth.
The president has called out James Comey and Andrew McCabe.
Russian Foreign Minister Sergey Lavrov said his country is willing to help with arrangements.
The FBI had previously confirmed the existence of the drafted statement.
The former attorney general and former president met in Phoenix while the FBI was investigating Hillary Clinton's use of a personal email server.
The president spoke at the FBI Academy in Quantico.
The president made the comments ahead of his visit to the FBI.
Cobb also echoed the call by Jay Sekulow and others for a second special counsel.
The president and his supporters are increasingly attacking the special counsel and his team.
Wray appeared before the House Judiciary Committee after Trump said the reputation of the bureau was "in tatters."
The Blackwater founder testified before the House Intelligence Committee.
Representative Matt Gaetz and others are calling for answers about Comey's handling of the Clinton emails probe.
The special counsel's office released its first expenditure report.
Flynn's family said it has received an "outpouring" of support following his charge in the Mueller probe.
His office said it removed Peter Strzok over allegations about text messages.
The Flynn plea agreement contains a "cooperation" section, one that did not appear in the agreement for George Papadopoulos.
Flynn resigned as Trump's national security adviser in February.