Eighteen appointees by Donald Trump to the U.S. military academy boards were asked by the Biden administration to render their resignation until Wednesday evening or be terminated.

According to the White House, the appointees were named to the board during the final months of the Republican president's term in office.

The number of appointees include some high-profile administration officials for former U.S. President Trump including White House Counselor Kellyanne Conway who was assigned to the Air Force Academy, Press Secretary Sean Spicer who was put at the Naval Academy as well as Russell Vought, Office of Management and Budget Director and National Security Adviser H.R. McMaster who was appointed at the Military Academy boards.

White House Presidential Personnel Office Director Cathy Russell said they already sent out letters to the 18 appointees, giving them the instruction to either resign or face termination by the end of business day on Wednesday.

It can be recalled that in the final couple months of his presidency, Trump filled some of the positions at West Point, the Air Force and Naval Academy, granting those who were appointed with three-year terms.

But as it turns out, apparently, U.S. President Joe Biden and its administration are cutting those three years short.

Meanwhile, some of the appointees used Twitter to express their thoughts on this move of the White House.

Russell Vought, former director of White House Budget Office, for example, posted the letter he received from Biden's administration, expressing opposition through the caption, "No. It's a three-year term."

Spicer, assigned to the Naval Academy boards just like Vought, did the same thing but expressed a different message, suggesting that the President should focus on what is happening in Afghanistan.

Vought and Spicer, along with all the others that were the subject of this move by the White House, were appointed by Trump as members of the board of visitors which is essentially like the boards of trustees, overseeing affairs at a university.

Under the law, the President can appoint up to six people to each post, with the U.S. Congress filling the rest -- but Biden decides Trump's appointees must go.