The Heritage Foundation December 4, 2015
The Heritage Foundation November 13, 2015
The Heritage Foundation November 9, 2015
Competitive Enterprise Institute November 4, 2015
The Heritage Foundation October 14, 2015
The Heritage Foundation September 23, 2015
The Heritage Foundation July 28, 2015
Hoover Institution July 27, 2015
Rowman & Littlefield September 9, 2009
