Here's a 2005 article from American Republicans complaining that Episode III is anti-Bush: https://www.aim.org/media-monitor/another-billionaire-against-bush/
And a less-biased outlet on the comparisons being made at the time:
It is clear that theres a parallel between the Bush administration and the rise to power of the Empire, the Evil Empire, said Newsweek movie critic David Ansen in a Today show segment Monday morning. Ansen is just one of several voices asserting similarities between the politics of Star Wars and those of the current White House. Lucas dares, for the first time, to address how the hollow political conflict in his franchise correlates with the reality outside its panels, wrote Ed Gonzales, movie critic for Slant magazine, in his recent review. The Today shows Michael Okwu summarized one of the new movies storylines as: a warmongering chancellor of an intergalactic republic asks the senate to give up their liberties and to give him more powerunder the guise of being under attack. Ansen said, It appeared to be a reference to the Patriot Act and to our sort of giving up our civil liberties in the name of national security. In the movie, Anakin Skywalker, played by Hayden Christensen, completes his descent to the Dark Side of the Force and transformation to Darth Vader. In doing so, Anakin tells his former friend and mentor, Obi-Wan Kenobi (Ewan McGregor), If youre not with me, then youre my enemy. The Today show balanced that movie line with a clip of President Bush saying in November 2001, Youre either with us, or youre against us in the fight against terror.