Justices of the peace and local municipal courts of criminal jurisdiction are generally given power to deal finally with a few petty offenses, subject to a right of appeal to a court where a jury trial can be had. As to all others, their function is, when the warrant of arrest has been executed, to inquire whether there is probable cause for holding the defendant to answer to the charge which has been made against him in a higher court, and if they find that such cause exists, to order him to give sufficient security that he will appear before it for trial. The question is not whether the evidence satisfies them of his guilt, but simply whether it is sufficient, in their judgment, to make it proper to send him where the charge can be more thoroughly investigated by those who have the right to condemn or to acquit. In making this inquiry, they hear both sides, if the defendant has any testimony to offer. In most States he is now a competent witness in his own behalf, provided he desires to testify. He cannot be interrogated in any court or before any magistrate without his consent. This is a weakness in the American system of criminal procedure. Under the English system of prosecutions by private persons, there are greater objections to subjecting an accused person to an examination, and it can now only be had by his consent.[Footnote: Maitland, "Justice and Police," 129.] The certainty in England also that criminal prosecutions may in any case be subjected to the power of a public officer by the interposition of the Attorney-General or the Director of Public Prosecutions makes it more important to safeguard a defendant who may be arraigned for a political offense, and whose prosecution may be inspired by reasons of a partisan nature. The magistrates upon whom the task of conducting or superintending the examination would naturally fall are also largely both representative of class interests and unlearned in the law. In the United States local prosecutors are often of a different party from that which controls the State or the United States. They have no close connection with those administering the general affairs of the government. They hold office for fixed terms, not dependent on any shifting of parliamentary majorities or change of ministry. Committing magistrates are in a similar position. They are also in many cases trained lawyers. If our Constitutions could be so modified or so construed as to allow them to ask the accused the questions that the sheriff who makes the arrest or the reporter who hurries after him to the jail is sure to ask, there are many reasons for believing that it would oftener prove a safeguard to innocence than an occasion for extorted and perhaps inconsiderate or misunderstood admissions. And be that as it may, it would certainly lead up to important clues, and frequently bring out admissions that were both unquestionably true and necessary to establish guilt.