With the advent of a potential overhaul of Congress at the hands of voters on November 7, we are witnessing some hysterical predictions by a highly-placed Executive Branch official of "an immense tax increase and the economy would sustain a major hit.'' But, as this Bloomberg article published today reports, "Stock-market investors aren't buying it." Why isn't Wall Street in the grip of fear that a Democratic Congress would unilaterally roll back the Bush tax cuts and move aggressively to regulate the economy? As the article points out, investors are soberly "banking that a Democratic victory will mean political stalemate with President George W. Bush rather than passage of an anti-business agenda."