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Input: WASHINGTON (Reuters) - President Donald Trump’s former chief strategist Steve Bannon has been subpoenaed by Special Counsel Robert Mueller to testify before a grand jury in a probe of alleged ties between Russia and Trump’s 2016 presidential campaign  the New York Times reported on Tuesday.
A spokesman for Mueller’s office declined comment. Bill Burck  a lawyer for  Bannon   could not immediately be reached for comment.
The reported subpoena of  Bannon  does not mean  he  is a target of Mueller’s criminal investigation.
 Bannon   a champion of Trump’s “America First” agenda  was among the Republican’s closest aides during the 2016 election campaign  the presidential transition and  his  first months in office.
But the pair had a bitter public falling out over comments  Bannon  made to author Michael Wolff for his recent book “Fire and Fury: Inside the Trump White House.”
In the book   Bannon  is quoted as describing a June 2016 meeting between Trump associates  including the president’s son Donald Trump Jr.  his son-in-law  Jared Kushner  and a Russian lawyer  as “treasonous” and “unpatriotic.”
 Bannon  was fired by the White House in August and returned to the right-wing news website Breitbart News.  He  continued to speak with Trump and tried to promote the president’s agenda.
But Trump accused  Bannon  of having “lost  his  mind” when news of  his  comments to Wolff surfaced earlier this month. Six days later   Bannon  stepped down as executive chairman at Breitbart.
Mueller’s subpoena  which was issued last week  could be a pressure tactic to induce  Bannon  to cooperate fully with  his  investigation.
Attorney Renato Mariotti  a former federal prosecutor  said the most likely reason for a Mueller subpoena of  Bannon  was that “he thought having an attorney present and giving  Bannon  a more relaxed setting would not yield the same testimony as if  he  got  him  in the grand jury room with no attorney there and a more adversarial style of questioning.”
Separately on Tuesday   Bannon  spent hours meeting behind closed doors with members of the House of Representatives Intelligence Committee.  He  was the latest high-profile figure to appear before the panel as part of its investigation into allegations of Russian interference in the U.S. election.
After  Bannon  refused to answer questions about  his  time in the White House - as opposed to during the campaign  Devin Nunes  the committee’s Republican chairman  authorized a subpoena during the meeting to press  Bannon  to respond.
Asked if the White House had told  Bannon  not to answer certain questions  spokeswoman Sarah Sanders said: “As with all congressional activities touching upon the White House  Congress must consult with the White House prior to obtaining confidential material.”

Special counsel subpoenas former Trump aide Bannon: report