The legend that was Earth

From back cover Baen paperback October 2001:

They've eased our problems. They've raised our standards of living. And now the alien Hyadeans' high-tech gifts and their flair for social order promise to make a paradise of planet Earth.

But when a political assassination plunges his life into chaos, wealthy socialite and "Fixer" Roland Cade discovers the dark underbelly of the alien presence. Our government obeys them. Our economy serves their wealthy masters. And the CounterAction "terrorists" on the new are truly fighting for freedom for Terrans and Hyadeans alike -- and one of them is his ex-wife.

Soon Cade is caught up in a terrifying conflict that threatens to destroy the world, turning Amercan against American -- and alien against alien.