U.S. Treasury Secretary Janet Yellen Pushes for Global Tax Deal U.S. Treasury Secretary Janet Yellen is mounting pressure on global leaders to finalize a long-awaited international tax agreement. The proposed deal aims to establish a minimum global corporate tax rate, which would help prevent multinational corporations from exploiting tax havens and shifting profits to low-tax jurisdictions. Yellen's efforts come as the U.S. and other countries seek to address concerns over income inequality and the erosion of tax bases. A successful agreement could also pave the way for a more coordinated global approach to taxation, potentially leading to increased tax revenue for governments worldwide.