washington president donald trump wednesday propose slash u.s. tax rate corporate pass-through business profit 15 percent 35 percent also offer tax cut average americans rough outline tax policy goals one-page summary proposals release white house brief say trump also want reduce number tax bracket three seven double standard deduction americans claim tax return repeal estate tax alternative minimum tax u.s. law congress make major tax law change lawmakers initially greet trump plan start point discussion overhaul tax code trump propose 15 percent business tax rate white house summary