The United States has politely declined Iraq's invitation for it to withdraw its troops from the country.
President Trump has informed the Iraqi government that withdrawal will cost $35 billion which the U.S. will reimburse itself with from Iraqi treasury accounts currently held in the U.S. The United States also confirmed it would transit forces into and through Iraqi airspace at its leisure, and would not seek permission to do so.
Iraqis are, however, free to start an online petition on moveon.org if they don't like this arrangement. Once it's received one million signatures they can email the petition to spam@whitehouse.gov where it will receive the attention it deserves.
https://www.thebaghdadpost.com/en/Story ... ove-troops