Freshman Senator Ron Johnson has been in office for seven months, but deems
 UW-Madison Law School Professor Victoria Nourse unqualified and is blocking her confirmation.
And a good thing he stepped in: look at her fly-by-night qualifications:
According to the White 
House, Nourse, 51, is currently the Burrus-Bascom Professor 
of Law at the University of Wisconsin Law School, which she joined in 
1993. She has also taught at the Emory University Law School, the 
University of Maryland School of Law, Yale Law School, New York 
University School of Law, and Georgetown University Law Center.
Nourse has written extensively on criminal law, legislation, 
constitutional history and the separation of powers. She also 
assisted then-Senator Joseph Biden in drafting the Violence Against 
Women Act, part of the Biden-Hatch Violent Crime Control and Law 
Enforcement Act of 1994. Nourse received her B.A. in 1980 from 
Stanford University and her J.D. in 1984 from the University of 
California, Boalt Hall School of Law.
Another website reveals more of these so-called 'qualifications:'
Professor Nourse has written over two dozen articles on Congress, 
statutory interpretation, constitutional history and the criminal law, 
published in Yale, Stanford, Penn, Texas and other law reviews.   In 
2009, she published 3 articles:   A Tale of Two Lochners in the California
 Law Review; The Lost History of Governance and Equality 
(with Sarah Maguire) in the Duke Law Journal; and Varieties of
 New Legal Realism:   Can a A New World Order Yield A New Legal 
Theory? (with Greg Shaffer) in the Cornell Law Review.  In 
2010, she will publish a book review essay, Toward A Representational
 Theory of the Executive (with Jack Figura) in the Boston 
University Law Review and, in 2011, Misunderstanding Congress:  
Statutory Interpretation, the Supermajoritarian Difficulty, and the 
Separation of Powers, in the Georgetown Law Journal.
Professor Nourse came to teaching after a series of assignments in 
Washington and New York.   She was Senior Counsel to the Senate 
Judiciary Committee under the Chairmanship of then-Senator, now 
Vice-President, Joseph Biden where she was charged with drafting Senator
 Biden's Violence Against Women Act (see Equal:  Women Reshape 
American Law 309-444 (Norton 2009)).   Professor Nourse came to the 
Judiciary Committee from appellate practice in the Justice Department, 
where she argued cases in the D.C. Circuit and other courts of appeal.  
 Prior to that, she served as Special Counsel to the Senate Iran-Contra 
committee.   She began practice in New York at Paul, Weiss, Rifkind, 
Wharton & Garrison, after clerking for Judge Edward Weinfeld 
(S.D.N.Y).   She is an order of the coif graduate of the University of 
California (Boalt) law school; and a Phi Beta Kappa graduate of Stanford
 University.
Johnson is the owner of an 
Oshkosh (corrected) plastics company, an accountant and first-time office-holder who attended Tea Party rallies and
 decided to run for office after seeing Dick Morris on Fox News discuss the Wisconsin Senate race.
More context 
here.
Johnson is also blocking a separate nomination to the US District Court bench for former Wisconsin State Supreme Court Justice Louis Butler, but only because he can.