The Federal Reserve is in for an unusual amount of upheaval this year as the Trump administration continues its efforts to reshape the makeup of the central bank and exert more sway over policy.

The biggest personnel question is who will be the next Fed leader. President Donald Trump is expected to announce his pick to replace Chair Jerome Powell in the coming weeks. But this could be just one piece shifting at the Fed this year.

A recent Department of Justice probe related to comments Powell made about a Fed renovation project has stoked uncertainty over leadership changes at the US central bank.

Read More: Trump’s Pursuit of Powell Threatens to Muddle The Tea Leaves For Fed Watchers

Here’s where the Federal Open Market Committee, the 12-member panel that votes on interest rates and other policy decisions, stands today and how it could be transformed over the next few months.

The Committee

A Potential Vacancy

Powell’s Decision

Powell’s term as chair ends in May of this year, but his seat on the board doesn’t expire until 2028. Though Fed chairs typically leave the central bank when their leadership terms are up, Powell has not specified when he plans to step down from the board. If he stays, Miran’s slot is Trump’s only sure opening for naming a new leader to the Fed who is not currently on the board.

Legal Unknowns

One overt example of Trump’s bid to control the Fed is his attempt to oust Fed Governor Lisa Cook over unproven allegations of mortgage fraud before she joined the Fed. Arguments over whether she can remain in her job while lower courts take on the case will be heard by the Supreme Court on Jan. 21. The high court has so far sided with Cook by allowing her to stay at the Fed while her case plays out.

Shifting Regional Bank Seats

Apart from the movement happening at the board, the routine rotation of regional bank presidents on the FOMC will bring in four new voters for policy decisions this year.

Regional Fed presidents are selected by their boards of directors and affirmed by the Board of Governors in Washington.

Some of the incoming voters, including Cleveland Fed President Beth Hammack and Dallas Fed President Lorie Logan, have said officials should prioritize reining in inflation and expressed reluctance to lower rates further.

The Trump administration has explored ways to have more influence over the regional Fed banks. Gaining a majority of Trump-appointed policymakers on the Board of Governors could give the president more leverage: The Fed Board can vote to remove regional bank presidents.