Can all Americans going through court cases, send lawyers to testify on their behalf, like trump does?

Question

Update:

Which ones were on the Ukraine call?

Answer 1

Trump has done no such thing since he's become president, because there have been no court cases involving him.  Giving evidence to a committee or an inquiry is not being in court.

Answer 2

To testify is to take an oath to tell the truth and give evidence. Lawyers don't testify; they argue, which is putting the evidence in a light most favorable to their client.

Answer 3

In some trials, yes. If you don't need to testify you may not have to appear.

Answer 4

Um, yes? The defendant doesn't have to say a word.

Answer 5

Lawyers advocate your position 100 percent of the time. That's their job dumbass.