AntiTrumpAlliance

Wilson, Jackson, Polk, Reagan. If you really want scandalous Jackson is easily the most scandalous President in history. The country was shocked when he got in, and he went on to cause the Trail of Tears, and the deepest (by percentage, not actual dollar value) and longest depression in US history, by paying off all the national debt, and rendering the country unable to trade with other countries for a few years.

Wilson wrote Southern Revisionism, refounded the KKK, erected a bunch of statues that we are finally tearing down, segregated The Federal Government, and may have caused WW2, and definitely set the stage for endless wars with Wilsonian Doctrine. He also caused and expanded several conflicts in South and Central America creating banana republics. Oh yeah, he expanded the presidential powers to tyrannical proportions with the sedition and insurrection act.

Polk did Manifest Destiny, and was generally an asshole to the natives, and Monroe created The Monroe Doctrine, continuing the general assholery towards the natives, though those two probably weren't considered scandalous in their day.

Reagan had Iran Contra. That did give us some fun video games though.