For me:
A complete reform of the US Education system from local to federal. The more I reminisce about my education in the 80's and early 90's while recalling the talk radio greats I listened to (Limbaugh and Boortz) the more I realize how right they were.
My knee-jerk reaction to this was deport all commies! but that only goes so far. Educating our children on the evils of communism, removing the teachings (social justice, gender studies, revisionist history, freakonomics, etc) will have a lasting impact that will preserve our nation.
People tend to blame problems on the most visible threat, not the one that hurts them most. IMO the FDA is a so corrupt it has to be dismantled from the top down. The harm they do crosses multiple industries and their corruption (bribery) is well documented.