texas democratic congressman lloyd doggett questions whether the moves of several companies are legit. >> a good example is one of my texas companies that's been in the news lately, transocean. >> transocean owned the drilling rig involved in the giant bp oil spill. they moved to zug. >> i'm not sure they even moved that much. they have about 1,300 employees still in the houston area. they have 12 or 13 in switzerland. >> and yet they claim that they're headquartered over there. >> they claim they're swiss, and they claim they're swiss for tax purposes, and by doing that, by renouncing their american citizenship, they've saved about $2 billion in taxes. >> so here we are in zug. we went to find their operations here. and we came to see your international headquarters. >> um, at the moment, my boss is not here, so... >> she said her boss wasn't there and we should call someone halfway around the world. in houston? >> yeah. >> not here? >> no. >> but this is the headquarters. >> i know. >> and is the ceo here? >> no. >> i mean, normally here? >> no. >> another texas company that moved h