"At US$50 per barrel there's a lot of incentive to continue the policy, at US$60 per barrel, no. It'll depend on how fundamentals exert themselves in the second quarter," Hardy said, according to Reuters.
Wall Street moved higher. In 1.30pm trading in New York, the Dow Jones Industrial Average gained 0.6 per cent, while the Nasdaq Composite Index rose 0.5 per cent. In 1.14pm trading, the Standard & Poor's 500 Index climbed 0.6 per cent.
Despite the Trump administration's failure on a Republican health care bill, investors remain optimistic it will successfully negotiate tax reform that is seen as supportive for business.
"This market is driven by two things-the hope of policy agenda getting put into place and improving fundamentals," Art Hogan, chief market strategist at Wunderlich Equity Capital Markets in New York, told Reuters.
"Whenever you found out that the agenda might take longer to get put out, you've gotten some piece of economic data that reminds you that the fundamental backdrop is still strong," Hogan noted.
Advances in shares of JPMorgan Chase and those of DuPont, up 1.7 per cent and 1.6 per cent respectively, led the Dow higher.
In Europe, the Stoxx 600 Index ended the day with a 0.6 per cent advance from the previous close. France's CAC 40 Index increased 0.6 percent, the UK's FTSE 100 Index added 0.7 per cent, while Germany's DAX Index rose 1.3 percent.
On Wednesday UK Prime Minister Theresa May is set to trigger Article 50, marking the start of two years of negations about the terms for the country's exit from the European Union.