Southwest Airlines (LUV) CEO Gary Kelly weighs in on tax reform, the airline's new Hawaii routes starting in 2018 and the possibility of paying for airfare with bitcoin.

Kelly is pleased with the tax reform proposals being debated on Capitol Hill.

"It will provide companies like ours the ability to invest more in the business, add jobs and share those gains of lower taxes with shareholders, employees and customers," Kelly said in an interview with TheStreet.

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