washington republican tax bill debate u.s. house representatives would add 1.7 trillion federal budget deficit 10 years recent change put forth head tax-writing panel estimate debt service cost include nonpartisan congressional budget office say cbo estimate additional debt service would boost 10-year increase deficits 1.7 trillion office say letter wednesday representative richard neal top democrat tax-writing house ways mean committee republican tax bill would add 1.7 trillion deficit cbo