In August 2019, it was widely reported that Donald Trump had floated the idea of buying Greenland. Greenland is a self-governing overseas administrative division of The Kingdom of Denmark. The Danish Prime Minister called the idea “absurd.”
In 2017, after Puerto Rico was devastated by Hurricane Maria, Donald Trump floated the idea of selling it, according to former acting Secretary of Homeland Security Elaine Duke. Puerto Rico is a US territory whose people are US citizens.
There is NO truth to rumors that Trump is currently attempting to sell California, Washington, Oregon, Hawaii, and other Democratic leaning states.