"I have been caught in a battle between two competing branches of government."
Over sirens, whistling and a cow bell outside the courthouse, Navarro told reporters he would appeal and that his case was destined for the Supreme Court.
"It is a case that really asks the important question of whether a senior White House aide and alter ego for the president can be compelled to testify by Congress."
Navarro has argued he did not have to comply with a congressional subpoena because he thought Trump had invoked the legal doctrine of executive privilege.
Navarro has also complained of what he's called a two-tiered justice system.
But at Thursday's sentencing the judge told Navarro: "You are not a victim. You're not the object of a political prosecution," adding "The words 'executive privilege' are not magical dust to avoid a duty that you have when Congress issues process. It's not a get-out-of jail-free card."
Federal prosecutors argued Navarro chose allegiance to Trump over the rule of law.
Meanwhile, Navarro's lawyers have asked for probation.
In September, Navarro was found guilty of two counts of contempt of Congress for defying a subpoena to turn over documents and provide testimony to a Democratic-led House of Representatives panel.
The 74-year-old, who advised Trump on trade issues during his presidency and served on a COVID-19 task force, is the second prominent Trump adviser to be convicted of contempt of Congress for spurning the House panel.
Steve Bannon, Former Trump adviser and right-wing firebrand was sentenced to four months in prison in 2022.
He has avoided serving the sentence while he appeals his conviction.
