A Billion Here, A Billion There: A billion here, a billion there," as the late Sen. Everett Dirksen put it, "and pretty soon, you're talking about real money." Well, these days, multibillion-dollar spending proposals are as thick on the ground in Washington as cherry blossoms in April. We're talking real money, all right -- but nobody's saying much about where it's all supposed to come from. Barely a week has gone by since Sept. 11 without some new revelation about the staggering costs of the war against terrorism. First came the $40 billion in emergency funds authorized by Congress days after the attacks. Since then, there's been a $15 billion bailout for the airline industry, the estimated $1 billion per month for the direct costs of the military operation in Afghanistan, and billions more promised for humanitarian and economic assistance. Now we're preparing to spend yet more billions on intensified intelligence gathering, improved security for the postal system, and a new federalized airport security system. As if that weren't enough, plans are afoot for more spending on railroad and nuclear plant security, and aid for everyone from travel agents to insurance companies to farmers. When Congress reconvenes this week, one of its first priorities will be an economic stimulus package costing $65 billion to $100 billion to pull the economy out of the recession that the attacks either caused or worsened. So how are we going to pay for all this stuff?