http://www.bbc.com/news/world-europe-38700222

He's scum, pure and simple. And I cringe at those who would work with him in the vague hope of furthering their careers. There's collaborating and then there's collaborating.

How has he never been extradited if he's been convicted and skipped bail before sentencing.

There's been multiple attempts but take your pick from

He has friends
Being used as political leverage
Countries worrying about their liberal appearance/association with America
Opening up wider issues such as tax havens