A person may not discharge, fine, suspend, expel, discipline, or discriminate against a plan participant or beneficiary: for exercising a right to which the participant or beneficiary is entitled under this subtitle; or for the purpose of interfering with a right to which the participant or beneficiary may become entitled under this subtitle. A person may not discharge, fine, suspend, expel, discipline, or discriminate against a person, whether or not the person is a plan participant or beneficiary, because the person: has given information or testified in an inquiry or proceeding that relates to this subtitle; or is about to give information or testify in an inquiry or proceeding that relates to this subtitle. A person may not, by fraud, force, violence, or the threat of force or violence, restrain, coerce, or intimidate or attempt to restrain, coerce, or intimidate a plan participant or beneficiary for the purpose of interfering with or preventing the exercise of a right to which the plan participant or beneficiary is or may become entitled under this subtitle.