Republic of Ireland Will Back Kennedy/McCain Bill

Now here's an interesting bit of news ripped from the web:

"The Taoiseach (Prime Minister of The Republic of Ireland or ROI) made it clear the Government (ROI) was backing the Bill put forward by Sen McCain and Sen Ted Kennedy, both of whom pledged their renewed determination to secure a resolution to the problem."(emp.mine)

The Republic of Ireland (ROI) is backing the Bill? How can the ROI legally back ANY BILL within the political structure and processes of the United States of America?

Are we talking about the ROI somehow funneling cash (or other means of support) into various organizations within the US who will then "back the bill" on the behalf of the ROI?

Last time I checked, such interference within the internal affairs of the United States is against Federal law. And those who work with foreign entities could be considered - or at the very least construed to be - agents of said foreign nation - and therefore, enemies of the Federal government.

Which begs the question - WHO really are the constituents of Senators Kennedy and McCain?