Washington (CNN) President Donald Trump renewed his attacks on the Federal Reserve on Sunday, airing his frustration with the central bank.

"If the Fed had done its job properly, which it has not, the Stock Market would have been up 5000 to 10,000 additional points, and GDP would have been well over 4% instead of 3%...with almost no inflation," Trump tweeted.

He added: "Quantitative tightening was a killer, should have done the exact opposite!"

The comments come amid open Senate opposition to his two picks for open seats on the Federal Reserve Board of Governors, former Republican presidential candidate Herman Cain and economic commentator Stephen Moore

Four Republicans said last week they would not vote to confirm Cain, a former Republican presidential candidate who formerly sat on the Kansas City regional Fed board, because of sexual harassment allegations against him. He has denied the allegations.

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