Wall Street plumbs six-week lows after Republicans' healthcare flop

U.S. stock indices fell on Monday at the open to six-week lows as global stocks suffer hefty losses on concerns about U.S. president Trump's ability to deliver on his economic agenda, after the Republican party failed to pass their healthcare bill in the House. 

As of 13:42 GMT, Dow Jones fell 176.88 points, or 0.86% to 20,419.84, while Standard and Poor's 500 shed 18.86 points, or 0.80% to 2,325.12, the lowest since February 13. NASDAQ Composite tumbled 58.78 points, or 1.01% to 5,769.95. 

Wall Street erased all of its gains made since Trump said in February he'll unveil a "phenomenal" plan to cut corporate taxes. 

The Republican's failure on Friday to pass their healthcare bill in the House due to defections from nearly 30 conservatives soured the mood on Wall Street and stoked concerns. 

The opposition led Trump to pull the bill before voting on it, failing in hit first test with his agenda in Congress, and raising concerns about the president's ability to deliver on his other promises to cut taxes and increase infrastructure spending.