You get a call from your boss, a U.S. Attorney, who is in the middle of a jury trial in Federal District Court. She explains that court has adjourned for the day, but she is concerned that a particular evidentiary issue will come up first thing in the morning. She believes that when the defense attorney cross-examines one of her witnesses that he will attempt to use the fact that the witness is a practicing Catholic to impeach the witness' credibility with the jury.

a. What rule of evidence addresses this issue?

b. Where did you find the rule?

c. If the defense attorney does indeed attempt to use the witness' religious beliefs against him, is your boss likely to prevail on an objection? Why or why not?