Crude oil prices were slightly higher Tuesday morning as the Federal Reserve prepared to kick off its crucial two-day meeting.

Few people know for sure whether the Fed will finally raise interest rates after eight years at zero.

Economic headwinds are starting to blow fiercely again, including a major slowdown in China, but some say the Fed will tighten nonetheless.

That could strengthen the dollar and dent crude oil prices.

Crude oil for October delivery was up 47 cents at 44.42 a barrel.

Prices have also been held in check by OPEC’s determination to keep markets oversupplied.

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