Why does the US forces the witnesses to appear in court?

[md2000]

@Northern_Piper

Why would they want to?

It’s a basic principle of trial prep …
It’s stronger than that. A Crown who proceeds to trial without being satisfied that there is a reasonable likelihood of conviction may be committing professional misconduct and may be opening himself up to a malicious prosecution lawsuit. I don’t understand why you think a Crown would want to call someone to testify when the Crown doesn’t know what that witness is likely to say.

Not with the court, no. In indictable matters,…

Very interesting. Answers my questions, thank you, and makes the point regarding OP, I hope.