The Heritage Foundation is wild, and one of the most significant public policy groups with deep ties to American conservatism. Basically, any crazy policy that the Republican party has taken on as a major party plank in the past 50 years has a distressing high chance of having its roots in Heritage’s recommendations.
For example, in 1981:
Among the 2,000 Heritage policy recommendations, approximately 60% of them were implemented or initiated by the end of Reagan’s first year in office.
Perhaps they should have left Western style Manifest Destiny in the past.