State lawmakers will consider today a revised tax and spending plan for the 2001-03 biennium that promises to shove an already teetering economy, buffeted by layoffs and the prospect of war, into a full-blown and painful recession. Its massive tax hike will fuel a healthy increase in wasteful state spending and help to push the state’s tax burden well above that of Massachusetts, California, and all the Southeastern states — and higher than the national average for the first time.