On “With All Due Respect,” journalists Mort Kondracke and Fred Barnes, co-authors of "Jack Kemp: The Bleeding-Heart Conservative Who Changed America," discuss their new book about the supply-side economics advocate, who some say was the most important politician of the twentieth century not to be president. Kondracke claims Kemp was the “real compassionate conservative,” saying he would be “deeply unhappy” with today’s GOP. Asked if he could see a glimmer of Kemp in any of the current crop of GOP candidates, Barnes says Kemp would like the tax plans of Donald Trump and Jeb Bush.