Justice Department criminal  investigation  now touches nearly all efforts to overturn 2020 election for Trump

Justice Department criminal prosecutors are now examining nearly every aspect of former President Donald Trump's efforts to overturn the 2020 election -- including the fraudulent electors plot, efforts to push baseless election fraud claims and how money flowed to support these various efforts -- according to sources and copies of new subpoenas obtained by CNN.

The investigation is also stretching into cogs of the sprawling Trump legal machine that boosted his efforts to challenge his electoral loss -- with many of the recipients of 30-plus subpoenas that were issued in recent days being asked to turn over communications with several Trump attorneys.

The sweeping effort has many in Trump world concerned about the potential legal significance of being caught up in a federal investigation.

The flurry of investigative activity has involved seizure warrants, including one served to Boris Epshteyn for his phone, according to multiple people familiar with the matter. Epshteyn remains a close aide to the former President and to his political and fundraising operation.

The widening pool of recipients of subpoenas also includes prominent Trump deputies, such as his former White House adviser Dan Scavino, who continued to work for Trump after he left office. The subpoena language and activity bring together the seemingly far-flung parts of the DOJ investigation.

The Justice Department previously obtained grand jury testimony, conducted searches and nabbed extensive documents about rally organization and fundraising, about efforts in and around the White House to pressure then-Vice President Mike Pence to block certification of the election results, and about the fake electors. This new round of subpoenas drills down with more specific requests about the baseless claims of mass election fraud that were being peddled to legislators, law enforcement and others.

In one of the new subpoenas viewed by CNN, along with demands for communications with a lengthy list of Trump-world figures and fake electors, the investigators ask for documents related to the raising and spending of money. Prosecutors are interested in the financing around the January 6 rally, bids to challenge the results and the Trump-aligned political organization formed after the election to push fraud claims.

The assistant US attorneys signing the subpoenas are working as part of the team led by prosecutor Thomas Windom in the DC US Attorney's Office, according to court records and multiple people familiar with the investigation. Two DC US Attorney's Office supervisors appear on the subpoenas as well, indicating the latest sweep serves both the ongoing fake elector probe and the prosecution office's larger mission to target planning of violence before January 6, according to the sources familiar with the team's work.

The subpoenas also ask for the recipients to identify all methods of communication they've used since fall 2020 and to turn over to DOJ anything the House select committee investigating January 6, 2021, has demanded -- whether they cooperated with the House panel or not.