Why is the OECD able to dictate tax policy to soverign countries?

[Howard_Roark]

Rarely does a day go by when I don't see something about this OECD, a Paris based economic organization with a budget of over $500 million of which a 1/4 comes from the US = $125+ million/year. They seem to have taken it upon themselves to rid the world of tax havens. I am amazed that such powerful sovereign countries such Switzerland and Singapore have effectively been forced to bow down to some Paris based trash talking organization whos goal seems to be to outlaw tax competition with socialist countries.