House Approves 10-Year Tax Cut For $550 Billion
House votes 222-203, almost entirely along party lines, to cut taxes by $550 billion over ten years, strongly endorsing Pres Bush's call to stimulate economy through lower taxes while differing on shape of package; plan is $176 billion smaller than Bush's version and rejects his priority of ending all taxation of corporate dividends, reducing top tax rate on dividends and capital gains to 15 percent; intense talks expected with counterparts in Senate, where moderates have refused to accept cuts of more than $350 billion; table; House Democrats rage at substance of plan and Republican refusal to consider alternative proposal without big cuts in dividend and capital gains taxes (M)