Apparently you overlooked Woodrow Wilson, at least with respect to social and economic policy. Wilson was a socialistic academic himself, a Princeton president who wrote books and articles lambasting the Constitution as an anachronistic impediment to his proposed "progressive" agenda. Then, as President of the US, he introduced the country to such novelties (at the time) of a peacetime federal income tax, direct election of the Senate, a Federal Reserve System, and tougher antitrust laws and enforcement.
On foreign policy, though, you could view Wilson as an interventionist war monger, who went far beyond even what most "conservatives" today would embrace.
Fair point. Thanks - I learned something.