While General Jessup was engaged in carrying out the designs of the Administration by artifice, and by force, events of a serious character were transpiring at Washington which demanded the attention of both the Executive and himself. John Ross, principal chief of the Cherokee Nation, learning the manner in which Osceola, Wild Cat, and other Seminole chiefs and warriors, had been betrayed and seized, while visiting General Jessup under a flag of truce, by advice and at the suggestion of the Cherokee Delegation, wrote an able and very spirited letter to the Secretary of War, demanding the release of the prisoners thus captured in violation of the principles of civilized warfare. The Secretary attempted a vindication of General Jessup, and an interesting correspondence followed, marked with great ability, in which Ross, with much force, exhibits what he seemed to regard as the perfidious treatment to which the Seminoles had been subjected, while acting under the advice of himself and his country-men, and protected by the flag of truce, which had ever been recognized and held sacred as the inviolable emblem of peace. This was the first exposure of the manner in which this disastrous war had been conducted. Up to that time no member of Congress, or Executive officer, appears to have uttered an objection or protest against the war, or against the manner in which it was carried on. Ross was at the city of Washington, and mingled freely with members of Congress, and in private conversations called their attention to the facts stated.[113] Mr. Everett, of Vermont,[114] a man of great experience and ability, moved a resolution (March 21) in the House of Representatives, calling on the Secretary of War for such information as he possessed touching the capture of Indians, while visiting the American army under flags of truce. The resolution was adopted, and, in reply, the Secretary of War (April 11) transmitted the answer of General Jessup, in which he rests his justification, upon the bad faith which, he alleges, the Indians had previously exhibited towards the United States. This answer occupies some fifteen documentary pages, most of which are filled with the facts already known to the reader. After the report of the Secretary of War had been printed, Mr. Everett gave his views upon the facts, in a speech which attracted much attention in the country. The people were already turning their attention to the subject of slavery. Petitions were sent to Congress calling on that body to abolish the institution within the District of Columbia. The Hon. John Quincy Adams had thrown the weight of his influence in behalf of the right of petition, and was known to be opposed to the institution. Hon. William Slade, a member of the House of Representatives from Vermont, had openly avowed his deep and heart-felt sympathy with the Abolitionists, who were striving to direct the popular mind to the crimes of the "_peculiar institution_," as slavery was then called.