BUSH PUSHES HARD TO WOO DEMOCRATS OVER TO TAX PLAN
Pres Bush and aides mount all-out campaign to woo conservative and moderate Democrats as bitterly divided Congress takes up first critical portion of Bush's proposed $1.6 trillion tax cut; Bush's road trips are none-too-subtle lobbying expeditions, with one or more undecided or politically vulnerable lawmakers in mind; his movements trace map of states that are home to Democratic senators up for re-election in 2002 or states where his significant margin of victory in 2000 Presidential election could make Democrat fearful of bucking him; speed with which Republicans are attempting to ram through tax-rate reductions, without any talk of compromise, has alienated conservative Democrats who may have been ready to respond to Bush's call for bipartisan cooperation (M)