The Constitution of the United States requires presidents to submit their nominees to the

The Constitution of the United States requires presidents to submit their nominees to the United States Senate for their advice and consent. Review the list of nominees for the Supreme Court from 1789 to the present (Links to an external site.). on the United States Senate website.
Review the nomination and confirmation process provided by Georgetown Law Library, Supreme Court Nominations Guide (Links to an external site.). 
Some suggest the practices of applying a Litmus Test and Senatorial Courtesy to potential nominees for federal judges and for the Supreme Court totally subverts the Constitution of the United States.
Write a one page response on the practice of using political “tests” to determine ideological purity in selecting judges as opposed to selecting a nominee based on professional qualifications without referring to ideology.
https://www.senate.gov/pagelayout/reference/nominations/Nominations.htm
http://guides.ll.georgetown.edu/supreme_court_nominations