The European Union began an investigation today into whether US measures on foreign online gambling companies break international rules, possibly paving the way for World Trade Organisation action.
European online gaming companies, such as PartyGaming and bwin Interactive Entertainment, complained in December that the US Justice Department was singling out foreign online gambling companies for prosecution.
"The US has the right to address legitimate public policy concerns relating to Internet gambling, but discrimination against EU companies cannot be part of the policy mix," EU Trade Commissioner Peter Mandelson said in a statement.
"We are interested in a constructive and mutually satisfactory solution to this issue."
The Commission said it would look into the complaints over the next five to seven months and could decide to launch WTO proceedings against the United States if warranted.
Separately, the Commission agreed in December to an offer from the US of openings in other sectors as compensation for closing US gambling market to foreign firms.