Has there been a bill introduced in Congress called the 80% bill 

The claim that there has been a bill introduced in the U.S. Congress specifically called the "80% bill" is not supported by the available evidence. The sources reviewed include references to bills with numbers such as H.R.80 or S.80 and discussions of legislation involving percentages like 80% in Medicaid funding or expansion rates, but none explicitly name or identify a bill titled the "80% bill." The references to "80%" mostly relate to statistical data or policy percentages rather than a formal bill name. Additionally, none of the sources are from trusted or official government repositories confirming the existence of a bill formally called the "80% bill." Therefore, the claim appears to be a misunderstanding or mislabeling of legislative items involving the number 80 or 80% but not an actual bill by that name.