(20)The first category of credit institutions and financial institutions, or groups of credit institutions and financial institutions, should be assessed every three years, based on a combination of objective criteria related to their cross-border presence and activity and criteria related to their ML/TF risk profile. Only credit institutions or financial institutions, or groups of credit institutions or financial institutions, which are present in a significant number of Member States, regardless of whether they operate through establishments or under the freedom to provide services in Member States, and for which supervision at Union level would therefore be more adequate, should be included in the selection process.