The investigation is yet another legal threat surrounding the president as he prepares for the State of the Union address on Tuesday.
Prosecutors also showed interest in whether any foreigners illegally donated to the committee, according to the New York Times.
The subpoena was issued by New York's Southern District.
"I think the biggest focus and the thing that most Americans care about has nothing to do with the inaugural and it has everything to do with what the path forward looks like", she said.
During an interview with CNN's John Berman, Sanders rejected the notion that a sweeping subpoena of documents related to possible corruption related to Trump's inaugural committee reflected poorly on the president at all.
White House spokeswoman Sarah Sanders said that the inaugural committee's operations did not involve President Trump himself.
In December, The Wall Street Journal reported that prosecutors were probing whether the Trump administration accepted donations in exchange for access to the White House. Federal law prohibits foreign contributions to inaugural funds.
It's unclear why prosecutors are seeking all communications between the committee and Zuberi, whose firm Avenue Ventures contributed $900,000 to the Trump inaugural committee.
The head of the inaugural committee, Tom Barrack, confirmed to The Associated Press that he was questioned by special counsel Robert Mueller in 2017. Zuberi, who had raised money for President Barack Obama and Hillary Clinton, was reportedly trying to develop a relationship with Trump. The notion, though, that it has nothing to do with the White House ... it has something to do with the person who sits in the Oval Office, in that President Trump, it was his inauguration, it was his campaign that there are so many investigations and questions with now. Josh Kushner, who was apparently not named in the subpoena, is the brother of First Son-In-Law Jared Kushner. Zuberi visited Trump Tower in December 2016, meeting with future national security adviser Michael Flynn and a delegation of Qatari government officials.
The deputy chairman, who managed the operation, was Rick Gates, who has pleaded guilty to charges of conspiracy and false statements in the Mueller investigation in a cooperation deal.