A new memo sheds light on the extraordinarily long arm of the FBI as it investigated President Donald Trump — showing that the bureau gobbled up the personal data of at least 639,000 Republican donors, voters and supporters.

Former Special Counsel Jack Smith and the Biden Justice Department obtained data including the names, dates of birth, physical addresses, email addresses, and voter registrations of thousands of everyday Americans, according to the memo released Wednesday by Senate Judiciary Committee Chair Chuck Grassley.

Smith wielded the country’s most powerful law enforcement tools to nab data on Trump supporters who purchased MAGA hats, including their shipping addresses.

Smith’s sweep — though ostensibly focused on the events of January 6, 2020 — captured data back to 2005.

The documents suggest that Smith sought to ensnare the information of thousands of everyday Republicans, effectively treating them like parties to a criminal conspiracy due to their party affiliation.