Mezue ahịrịokwu na-esonụ: Site na 1968 ruo 1970 o jere ozi n'Usoro Agha United States. N'afọ 1972, a họpụtara ya na ndị omebe iwu Nebraska wee jee ozi ruo n'afọ 1976 mgbe a họpụtara ya ka ọ bụrụ onye nnọchi anya mpaghara nke abụọ nke Nebraska na Ninety-fifth United States Congress. A họpụtaghachiri ya na Kọmịshọn nke iri itoolu na isii nke United States na-eje ozi site na Jenụwarị 3, 1977 ruo Jenụwarị 3, 1981. Ọ azaghị maka ntuliaka ọzọ n'afọ 1980, na-ahọrọ ịmaliteghachi ọrụ ya na Omaha. Ọ bụ onye Katọlik ma bụrụ onye nnọchi anya Nebraska na Democratic National Convention nke 1980, 2000, na
Afọ 2004. Cavanaugh bụ onye otu ReFormers Caucus nke Nkebi nke Mbụ.