Neil Gorsuch: Who is Trump's Supreme Court nominee?

Donald Trump's pick to be the next US Supreme Court justice has been on a charm offensive here in Washington.

Neil Gorsuch met with the Republican leadership on Capitol Hill.

Meanwhile, the President has urged the leaders of Congress to "go nuclear" if need be - that is, change the rules to get his appointment through.

Who is Judge Gorsuch, and what impact might he have on the bench? Katty Kay reports.