American Postal Workers Union v. United States Postal Service

commenting on the reduced impeachment value of grants of use immunity | authorizing EEOC bringing ADEA action to issue subpeona, since “it is possible that respondent may label some of its members as ‘partners’ when, in fact, those members may not fit within the traditional definition of' the term” | prosecutor’s failure to disclose immunity agreement may lead to subversion of defendant’s due process rights | subpoena enforcement proceeding is not an appropriate forum in which to litigate the issue of coverage under a federal statute | subpoena enforcement proceeding is not an appropriate forum in which to litigate the issue of coverage under a federal statute | “[A]p-pellees merely make the conclusory assertion that Danko’s discharge has ‘chilled the will of the postal workers in Connecticut, and their elected officials.’ ” | “... [Rule 105] entitles the opponent to a binding instruction that alerts the jury to the possibility of the forbidden use and tells them not to use it for the purpose.”