President Donald Trump intends to nominate Christopher Waller, executive vice president at the Federal Reserve Bank of St. Louis, and Judy Shelton, an economic adviser to the president during his 2016 campaign, to the Federal Reserve’s board.

The announcements come after Trump’s earlier nominees, Stephen Moore and Herman Cain, both withdrew from consideration.

Shelton was earlier speculated to be a pick for the Federal Reserve board. Shelton has previously said that if appointed, she would lower interest rates to 0% in one to two years, echoing calls from Trump to lower rates.

Waller has worked at the Federal Reserve Bank of St. Louis since 2009, and previously was a chair of economics at the University of Notre Dame and a chair in macroeconomics and monetary theory at the University of Kentucky. He has written about the dangers of an inverted yield curve, in which short-term Treasury yields outpace long-term yields.

Both nominees will need Senate confirmation.