UPDATE 4-Toronto stocks led lower by weak resources
*TSX ends more than 100 points lower after choppy action
*Resource shares lead downside as commodities fall
*Uncertainty over U.S. bailout adds to volatility
*Financials rise on optimism over state of Canadian banks
(Adds details, quotes)
By Leah Schnurr
TORONTO, Sept 23 (Reuters) - The Toronto Stock Exchange's main index ended a choppy session lower on Tuesday, dragged down by resource shares that fell with commodity prices, while uncertainty continued to surround the U.S. bailout proposal.
Companies tied to oil, gold and other commodities slid, with the heavyweight energy and materials sectors providing the lion's share of losses on worries of slowing global growth and demand for resources.