This bill has bipartisan support, touted by Democrats and Republicans alike. $15 billion isn't a gigantic amount in the grand scheme of the economy. It could go to some use in our country, I'm sure, but the AIDs epidemic in Africa (and many other countries around the world) needs serious attention, and our economy will recover without the help of this 15 bil.
A little perspective: According to the
Bill Gates Net Worth Page, which calculates Bill Gates' net worth based on the value of Microsoft's stock and the amount of stock Gates owns, Bill Gates net worth is $30.82 billion.
edit: The House is discussing this right now (may 1, 12:30 noon) on C-SPAN