Opinion | Trump's letter to the Jan. 6 committee lashes out at coming subpoena - The Washington Post

If Trump were to testify, he would surely struggle to choose between admitting culpability or perjuring himself — or pleading the Fifth Amendment. He would be pressed on whether he knew well in advance that he lost the election, and on whether he decided long before the election to cast doubt on the result no matter what the voting showed, as part of a premeditated scheme to try to overturn an eventual loss. The committee powerfully demonstrated evidence of premeditation in its final hearing. Trump would be confronted with that evidence...

https://www.washingtonpost.com/opinions/2022/10/14/trump-jan-6-committee-subpoena-justice-department/