The statement that is not true is:
"President Reagan was able to promote federalism constantly throughout his administration."
While President Reagan did support some aspects of federalism, his administration also faced significant challenges and criticisms regarding its approach to federal-state relations. In practice, his policies sometimes conflicted with the principles of new federalism, particularly in how federal funds and mandates were distributed to states. Therefore, this statement can be considered misleading or inaccurate in the context of a constant promotion of federalism.