A federal court case is unfolding with Luigi Mangione expected to plead guilty. This development may have implications for another trial. Mangione is accused of shooting a CEO, and his guilty plea in federal court could lead to a double-jeopardy issue in a separate murder trial in New York state.

Further details on the case and its potential outcomes are available from the source, including the latest updates on the proceedings in federal court and the related New York state trial.