India, Nov. 18 -- The major U.S. index futures have erased an earlier advance and are currently pointing to a roughly flat opening on Monday following last week's climb to record highs.

The pullback by the futures came after a tweet from CNBC's Beijing Bureau Chief Eunice Yoon suggested Chinese officials have grown pessimistic about the chances for a trade deal.

"Mood in Beijing about #trade deal is pessimistic, government source tells me. #China troubled after Trump said no tariff rollback. (China thought both had agreed in principle.)" Yoon tweeted.

She added, "Strategy now to talk but wait due to impeachment, US election. Also prioritize China economic support."

The futures had previously benefited from a weekend report from Chinese ...