In the afterglow of Donald Trump's unexpected triumph,Republicans exulted over what they could accomplish with control ofboth chambers of Congress and the White House.

But behind the public show of unity, a stark differencelooms. House Speaker Paul Ryan is a fiscal hawk who wantsto couple tax cuts with deep spending cuts. Trump catapultedhimself into the presidency talking about tax cuts too, buthe also is proposing a multibillion-dollar infrastructure planand has vowed to protect entitlement programs like Social Securityand Medicare.

Such gaps went unmentioned when Trump met with Ryan and SenateMajority Leader Mitch McConnell last week. But ultimately, oneside will have to bend, whether Trump ends up moderating hisspending and tax-cut plans, or congressional fiscal hawks relent ontheir opposition to new spending.