[i]n 2019, compliance with GRECO recommendations under the 4th evaluation round slightly increased [from last year]: 36% of recommendations had been fully implemented by the end of the year. The recommendations with the lowest level of compliance continued to be those issued in respect of MPs (27%), whilst it was higher in respect of judges (37%) and prosecutors (46%).
GRECO was established in 1999, and its ultimate aim is "to improve the capacity of its members to fight corruption by monitoring their compliance with Council of Europe anti-corruption standards through a dynamic process of mutual evaluation and peer pressure." There are currently 50 GRECO member states, including the United States. In fact, the U.S. is currently taking part in the 4th round of compliance.