US Sees No Need For Global Deal To Tax Super-rich: Yellen

"Tax policy is very difficult to coordinate globally," Yellen told a press conference in Rio de Janeiro. (Credit: AFP)

The United States sees no need to negotiate an international agreement on taxing the super-wealthy, Treasury Secretary Janet Yellen said Thursday on the sideline of a G20 finance ministers' meeting.

The topic is a key priority of Brazil's leftist president, Luiz Inacio Lula da Silva, who this year heads the grouping of the world's major economies, the European Union and African Union.