Certifiable

With Rand Paul, caveat emptor is not merely an empty phrase. He lives it personally.

Paul's only certification was provided instead by something called the National Board of Ophthalmology, which is very convenient because he operates that organization himself.

If you believe the libertarian bullshit he peddles, he might be able to dig up the title to that bridge he's trying to sell.

Joe Conason nails it:

Libertarian ideology rejects most of the modern regulatory systems that protect consumers, because everyone should be responsible for determining whether the hamburger contains E. coli on his own.

Among other odd beliefs they hide, libertarians such as Paul believe they have every right to lie to you as long as they don't commit the lie inside a contract.