Protection

WRIT OF. A federal court has power to protect a litigant therein case, whether upon process or in the exercise of the police power of the state without process, where necessary for the protection of its own jurisdiction, and where the threatened act must rest for its justification upon a proceeding the validity of which is the very matter it is called upon to determine. In such case the federal court has power to grant protection to enable the party to come into the state, remain during the trial, and depart therefrom in the custody and under the protection of the United States marshal and without interference with his personal liberty by the officers or agents of the state; Chanler v. Sherman, 162 Fed. 19, 88 C. C. A. 673, 22 L. R. A. (N. S.) 992.