Sen. Bernie Sanders criticized the release of a Republican memo detailing how the Department of Justice spied on the Trump campaign Friday, saying it puts politics ahead of patriotism.

Sanders aired his thoughts on Twitter roughly two hours after the memo was made public. Earlier Friday, President Donald Trump declassified the document.

The release of the Nunes memo is a blatant attempt by House Republicans and the White House to disrupt the critically important investigation into Russia’s interference in the 2016 election and possible collusion between Russia and the Trump campaign. — Bernie Sanders (@SenSanders) February 2, 2018

The fact that Congressional Republicans and the White House would release a memo the FBI itself says is misleading is a sad example of a political party putting partisanship above patriotism. — Bernie Sanders (@SenSanders) February 2, 2018

What is Trump afraid of? According to news reports President Trump himself has acknowledged that the release of the Nunes memo was designed to disrupt Robert Mueller’s investigation. No political stunt should interfere with the special counsel’s work. — Bernie Sanders (@SenSanders) February 2, 2018

Rep. Devin Nunes, R-Calif., wrote the memo as chairman of the House Intelligence Committee. The document talks about the process of how the Department of Justice obtained a FISA warrant to spy on Trump campaign foreign policy adviser Carter Page in October 2016.