George Washington on Separation of powers

“It is important, likewise, that the habits of thinking in a free Country should inspire caution in those entrusted with its administration, to confine themselves within their respective Constitutional Spheres; avoiding in the exercise of the Powers of one department to encroach upon another.”

“To admit then a right in the House of Representatives to demand, and to have as a matter of course, all the Papers respecting a negotiation with a foreign power, would be to establish a dangerous precedent. It does not occur that the inspection of the papers asked for, can be relative to any purpose under the cognizance of the House of Representatives, except that of an impeachment, which the resolution has not expressed. I repeat, that I have no disposition to withhold any information which the duty of my station will permit, or the public good shall require to be disclosed: and in fact, all the Papers affecting the negotiation with Great Britain were laid before the Senate, when the Treaty itself was communicated for their consideration and advice. The course which the debate has taken, on the resolution of the House, leads to some observations on the mode of making treaties under the Constitution of the United States.”