To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Share Embed Share URL Video File Node URL Embed Code <iframe title="MRC TV video player" width="640" height="360" src="https://www.mrctv.org/embed/546937" allowfullscreen></iframe> Responsive Embed Code Embed Code <iframe title="MRC TV video player" width="640" height="360" src="https://www.mrctv.org/embed/546937" allowfullscreen></iframe> On Saturday's Good Morning America, ABC chief political analyst Matthew Dowd was asked about political winners and losers of impeachment, and he insisted the biggest loser was "the constitutional system of checks and balances."