Congress and President Bush have been taking turns adding to what what started out a $99.6 billion supplemental appropriations package. This weekend, Bush formally requested an additional $6.3 billion in spending (mostly for 4,400 new troops to be deployed in the "surge"). This amount, C-Span reports, Bush wants "offset by cuts ... from domestic appropriations made in the fiscal 2007 continuing resolution." Meanwhile, Congress has added about $15 billion for hurricane and agriculture-disaster relief, S-CHIP, materials for combat troops, and other sweeteners. The current House bill also includes Iraqi war conditions and a troop withdrawal timetable -- grounds for a veto, the White House warns. The president's proposed offsets, domestic program cuts, mostly in education, Amtrak and Community Development Block Grants, have previously been rejected by Democratic appropriators. Each successive addition makes the bill a harder sell in Congress or veto-bait for the White House. As of today, the bill totals $124.1 billion, making it the largest supplemental appropriations bill of all time. The House Appropriations Committee plans to mark up the bill Thursday.