President Trump praised House Intelligence Committee Chairman Devin Nunes Monday morning as a “Great American Hero” for spearheading efforts to make public a controversial memo detailing alleged abuses of a government surveillance program.

“Representative Devin Nunes, a man of tremendous courage and grit, may someday be recognized as a Great American Hero for what he has exposed and what he has had to endure!” Trump tweeted Monday.

The memo, which was compiled by Nunes, R-Calif., and Republican staff on the House Intelligence Committee, was released to the public Friday after the president declassified the document.

The four-page memo claims that officials within the Justice Department and the FBI used information contained in an unverified dossier, compiled by former British intelligence officer Christopher Steele, to obtain and renew a warrant to conduct surveillance on Carter Page, a Trump campaign adviser.

According to the memo, the officials did not disclose that the research for the dossier was funded by the Democratic National Committee and Hillary Clinton’s presidential campaign when it sought to obtain and renew the warrant.

Nunes has come under fire for leading the charge to release the memo to the public.

Democrats on the House Intelligence Committee accused the California Republican of mischaracterizing classified information and attempting to discredit the Justice Department and the FBI in an effort to undermine the investigation into Russian meddling in the 2016 election.

The FBI said last week it had "grave concerns" over the accuracy of the document.