The public relies on the advice of doctors and leading researchers. The public has a right to know about financial relationships between those doctors and the drug companies who make the pharmaceuticals prescribed by doctors.

He has remained very popular in Iowa even as the state trended Democratic. Grassley has campaigned to increase protection and provide support for "Whistleblowers". In May 2009 Grassley cosponsored a resolution to amend the US Constitution to prohibit flag-burning stating the flag is ".

A member of the Republican Party he previously served in the United States House of Representatives (1975–1981) and the Iowa state legislature (1959–1974). He is currently the ranking Republican on the Judiciary Committee. Charles Ernest "Chuck" Grassley (born September 17 1933) is the senior United States Senator from Iowa serving since 1981.