Bannon, who has been mostly quiet since the release of an incendiary book about President Donald Trump in which he figured prominently as a source, was seen arriving in Congress for the hearing early Tuesday.
News of the subpoena leaked to the Times as Bannon spoke behind closed doors before the House Intelligence Committee for its Russian Federation probe.
Bannon isn't the only Trump associate expected before the committee this week: Corey Lewandowski, Trump's first presidential campaign manager, is expected before the panel later this week.
Ford increases investment in electrification to $11 bn
But the automaker did say at the Detroit Auto show that the Mach 1 will be part of its increased push into electric vehicles. Ford's new CEO, Jim Hackett, has been working on a new electrification plan since being appointed previous year .
Mueller's been investigating Russian meddling in the 2016 presidential election for months.
Mueller issued the subpoena after Bannon was quoted in a new book criticizing Trump, saying that Donald Trump Jr.'s 2016 meeting with Russians was "treasonous" and predicting that the special counsel investigation would ultimately center on money laundering.
Underscoring the break, Trump said Bannon had "lost his mind" and branded him "Sloppy Steve" via Twitter. Instead, he's merely shifted the blame away from Trump Jr. and onto Manafort. Six days later, Bannon stepped down from his post as executive chairman at Breitbart News.
Mr Bannon was present for several controversial moments in the Trump administration, including the firing of former national security adviser Michael Flynn after he misled the Vice President about his dealings with Russian Federation. With scandal, Bannon apologized.
Negotiations have stalled over protection for undocumented immigrants brought to the U.S. As children, the DACA program President Trump plans to end in March. And that same month, the company's C.E.O., Alexander Nix, who reportedly contacted WikiLeaks founder Julian Assange, testified before the House Intelligence Committee via teleconference. Burck also represents several current and former administration officials who have been interviewed as witnesses by Mueller's investigators.