These considerations, added to the embarrassments of the whole question, amply suffice to suggest the policy of confining appropriations by the General Government to works necessary to the execution of its undoubted powers and of leaving all others to individual enterprise or to the separate States, to be provided for out of their own resources or by recurrence to the provision of the Constitution which authorizes the States to lay duties of tonnage with the consent of Congress. FRANKLIN PIERCE. PROCLAMATIONS. BY THE PRESIDENT OF THE UNITED STATES. A PROCLAMATION. Whereas information has been received by me that an unlawful expedition has been fitted out in the State of California with a view to invade Mexico, a nation maintaining friendly relations with the United States, and that other expeditions are organizing within the United States for the same unlawful purpose; and Whereas certain citizens and inhabitants of this country, unmindful of their obligations and duties and of the rights of a friendly power, have participated and are about to participate in these enterprises, so derogatory to our national character and so threatening to our tranquillity, and are thereby incurring the severe penalties imposed by law against such offenders: Now, therefore, I, Franklin Pierce, President of the United States, have issued this my proclamation, warning all persons who shall connect themselves with any such enterprise or expedition that the penalties of the law denounced against such criminal conduct will be rigidly enforced; and I exhort all good citizens, as they regard our national character, as they respect our laws or the law of nations, as they value the blessings of peace and the welfare of their country, to discountenance and by all lawful means prevent such criminal enterprises; and I call upon all officers of this Government, civil and military, to use any efforts which may be in their power to arrest for trial and punishment every such offender. [SEAL.] Given under my hand and the seal of the United States, at Washington, this 18th day of January, A.D. 1854, and the seventy-eighth of the Independence of the United States. FRANKLIN PIERCE. By the President: W.L. MARCY, _Secretary of State_. BY THE PRESIDENT OF THE UNITED STATES. A PROCLAMATION. Whereas information has been received that sundry persons, citizens of the United States and others residing therein, are engaged in organizing and fitting out a military expedition for the invasion of the island of Cuba; and Whereas the said undertaking is contrary to the spirit and express stipulations of treaties between the United States and Spain, derogatory to the character of this nation, and in violation of the obvious duties and obligations of faithful and patriotic citizens; and