This interview originally aired on October 7, 2015.
Marketplace host Kai Ryssdal talked with Republican presidential candidate Ben Carson about his campaign, the economy, and how he would change the government if he were elected.
Kai Ryssdal: Dr. Carson, good to have you with us.
Dr. Ben Carson: Good to be here.
Ryssdal: Here's the most basic question, sir, so I'll start with it first: Why do you want to be the president of the United States?