Breadcrumb AMCP.org Policy & Advocacy Letters, Statements & Analysis AMCP Submits Letter to Illinois Senate Committee Opposing House Bill 4146 Which Prohibits Formulary Changes During a Plan Year AMCP Submits Letter to Illinois Senate Committee Opposing House Bill 4146 Which Prohibits Formulary Changes During a Plan Year 5/8/18 Tweet this pagePost this page on FacebookPost this page on LinkedInEmail this pagePrint this page AMCP submits letter to Illinois Senate Committee opposing House Bill 4146 which prohibits formulary changes during a plan year.pdf Tweet this pagePost this page on FacebookPost this page on LinkedInEmail this pagePrint this page