Sen. Chuck Schumer on Monday called on the federal government’s 74 inspectors general to protect whistleblowers from “retaliation” after President Trump ousted some government officials who testified against him in the impeachment inquiry.

The New York Democrat’s letter to the acting inspector general of the Defense Department said Lt. Col. Alexander Vindman was “viciously attacked” by Trump for upholding his “oath to protect and defend the Constitution by bravely stepping forward to tell the truth.”

Vindman, a national security official at the White House, was escorted out last Friday along with his twin brother, Yevgeny Vindman, who was also assigned to the NSC, but was not called on to testify.

Several hours later, Trump recalled Gordon Sondland, the US ambassador to the European Union, who testified of a quid pro quo between Trump and the Ukrainian president over Trump’s desire for an investigation into former Vice President Joe Biden.

“These attacks are part of a dangerous, growing pattern of retaliation against those who report wrongdoing only to find themselves targeted by the President and subject to his wrath and vindictiveness,” Schumer wrote in the letter.

Kellyanne Conway, the White House counselor to the president, pushed back on claims that Trump is retaliating against those who testified against him.

In an appearance Monday on “Fox & Friends,” Conway said the Vindmans are still employed and that Alexander Vindman’s White House detail had ended and he was returning to the Defense Department.

“This is very typical to have a detailee for a temporary period of time who then returns to what their full-time job is,” Conway said.

Trump was impeached by the Democrat-controlled House in December but was acquitted during a trial in the GOP-majority Senate last week.