The sentiment or rule (for from being a sentiment it has risen to be a rule) of comity between States both aids in the enforcement in one of rights acquired under the other,[Footnote: Finney _v._ Guy, 189 U. S. Reports, 335, 346.] and in the prevention by one of acts which would infringe on prohibitions created by the other. Thus, if a corporation of one State has been organized to do business in another, it may be enjoined in its home State from amalgamating with a corporation of the other, contrary to the public policy of the other as declared by its courts.[Footnote: Coler _v._ Tacoma Railway and Power Co., 70 New Jersey Law Reports; 54 Atlantic Reporter, 413.] As no legal process can be effective outside the limits of the sovereignty by authority of which it is issued, no court of a State can summon before it witnesses not found within its jurisdiction, who live in another State. This, in view of the free intercourse and trade between all parts of the United States, would work intolerable hardship had not statutes been passed by every State permitting testimony to be taken outside of its limits by written deposition for use in civil cases. So far as criminal causes are concerned, this mode of relief generally cannot be pursued, owing to the common provision in our State Constitutions that the accused must be confronted by the witnesses against him. Most of the Northeastern States, to meet this difficulty, have passed statutes requiring their citizens when summoned by a local magistrate at the request of a court of another State to appear and testify before it in such a prosecution, to do so upon receiving payment for their time and expenses, on pain of a considerable pecuniary forfeiture.[Footnote: New Hampshire inaugurated this legislation more than sixty years ago. Public Stat., ed. 1842, 382. Most of the statutes apply only to adjoining or neighboring States, and some require reciprocity on their part.] * * * * * Lawyers of one State have no right to practice in any other. By courtesy and on motion of a member of the bar, it is customary for the courts of other States to allow them to participate in the conduct of any particular cause. In some States, lawyers who have removed their residence into them from another may in the same manner be admitted to their bar; in most there is a standing rule on the subject which requires proof of their having practiced in the courts of their original State for a certain number of years, and otherwise provides for an examination into their legal attainments. * * * * * CHAPTER XII TRIAL BY JURY