Updated: Sep 3
First, let me say that while I have my own political leanings, this isn't going to be a "conservative vs liberal" or "left vs right" bashing. This applies to all parties and political agendas.
I only want to talk about two areas that significantly affect all Americans: Social Security and Healthcare. Social Security was originally promised to NEVER be taxed. This was done by a series of rulings early in the Social Security program. (This is now classified as a 'myth' because the Reagan administration changed it. Yes, Reagan.) Here is the link: https://www.ssa.gov/history/InternetMyths.html