United States, without, however, being really in haste to go. “In anticipation” of the refusal of the Mexican government to receive Slidell, and before his report had reached Washington, on January 13, 1846, General Taylor was directed, by an instruction which was kept secret, to advance with his whole command to the Rio Grande, and a strong naval force was ordered to the Gulf of Mexico, to give emphasis to Slidell's demands. Meantime Herrera's government was overthrown by a revolution. But on the Mexican side of the Rio Grande no military movements were perceptible. The Mexican government was in a condition of utter bankruptcy and confusion. Slidell was instructed to present his letter of credence to the new Mexican President, Paredes. If he, too, declined to receive him, the matter would then have to be submitted to Congress.
There was great excitement in Congress meanwhile, — not, however, about Mexico, but about another complication threatening war with England. It will be remembered that Oregon and Texas were linked together in the Democratic platform. The Treaty of Ghent had left the conflicting claims of the United States and Great Britain concerning the Columbia or Oregon Valley unsettled. The Convention of 1818 provided for a joint occupation. The value of the country was not known. The Americans had there the trading-post Astoria, and the British Hudson Bay Company its trappers and fur traders. Negotia-
