Just as the US 2016 election race is heating up, Gary Johnson, former governor of New Mexico and Libertarian candidate making his second bid for the White House, discusses his immigration, fiscal and monetary policy, as well as legalising marijuana. Then, hosts Cardiff Garcia and Shannon Bond take a deep dive into the world of campaign finance. Tracking the funding of the 2016 campaign, the Center for Responsive Politics looks at who can spend money on political campaigns, how much they can spend, and more about the dark money. FT reporters also provide despatches from the Democratic and Republican primary races. Go to FT.com/alphachat for show notes and links.