Neither House can exercise any authority over a member or officer of the other, but should complain to the House of which he is, and leave the punishment to them. Where the complaint is of words disrespectfully spoken by a member of another House, it is difficult to obtain punishment, because of the rules supposed necessary to be observed (as to the immediate noting down of words) for the security of members. Therefore it is the duty of the House, and more particularly of the Speaker, to interfere immediately, and not to permit expressions to go unnoticed, which may give a ground of complaint to the other House, and introduce proceedings and mutual accusations between the two Houses, which can hardly be terminated without difficulty and disorder.--3 _Hats._ 51. No member may be present when a bill, or any business concerning himself, is debating; nor is any member to speak to the merits of it till he withdraws.--2 _Hats._ 219. The rule is, that if a charge against a member arise out of a report of a committee, or examination of witnesses in the House, as the member knows from that to what points he is to direct his exculpation, he may be heard to those points before any question is moved or stated against them. He is then to be heard, and withdraw before any question is moved. But if the question itself is the charge, as for breach of order, or matter arising in debate, there the matter must be stated, that is, the question must be moved, himself heard, and then to withdraw.--2 _Hats._ 121, 122. Where the private interests of a member are concerned in a bill or question, he is to withdraw. And where such an interest has appeared, his voice has been disallowed, even after a division. In a case so contrary not only to the laws of decency, but to the fundamental principles of the social compact, which denies to any man to be a judge in his own cause, it is for the honor of the House that this rule of immemorial observance should be strictly adhered to.--2 _Hats._ 119, 121; 6 _Grey_, 368. No member is to come into the House with his head covered, nor to remove from one place to the other with his hat on, nor is to put on his hat in coming in, or removing, until he be sit down in his place.--_Scob._ 6. A question of order may be adjourned to give time to look into precedents.--2 _Hats._ 118. $In the Senate of the United States, every question of order is to be decided by the President, without debate; but if there be a doubt in his mind, he may call for the sense of the Senate.--_Rule_ 16.$ In Parliament, all decisions of the Speaker may be controlled by the House.--3 _Grey_, 319. SECTION XVIII. ORDERS OF THE HOUSE. Of right, the door of the House ought not to be shut, but to be kept by porters, or sergeants-at-arms, assigned for that purpose.--_Mod. ten. Parl._ 23.