In process of this investigation all sorts of accusations and charges were made against the President. His enemies now employed the very same weapons against him which had been employed to convict the alleged assassins of his predecessor and the alleged conspirators against his own life. General Baker and his detectives, Conover and his allies, appear once more upon the scene. They actually invaded the privileged quarters of the White House and stationed spies in the very private apartments of the President. This time, however, they are ready to swear, and in fact do swear, not to having seen letters from Jefferson Davis to his agents in Canada advising assassination, but letters from Andrew Johnson to Davis squinting in that direction. They actually charged the President with being an accomplice in the assassination of Abraham Lincoln. Forgetting that a human being had been hung for lying in wait to kill Andrew Johnson as a part of a general conspiracy to murder the heads of the Government, these desperate men propose to impeach the President for being an accomplice in his own attempted murder. Ashley openly denounced him, in the House of Representatives on the 7th of March, 1867, as "the man who came into the Presidency through the door of assassination," and alluded to the "dark suspicion which crept over the minds of men as to his complicity in the assassination plot," and "the mysterious connection between death and treachery which this case presents." Ashley had private interviews in the jail with Conover and Cleaver, who were confined there for their crimes, and they assured him of the guilt of Andrew Johnson. They furnished him with memoranda and letters purporting to show that Andrew Johnson and Booth were in communication with each other before the murder of Lincoln, and that Booth had said before his death that if Andrew Johnson dared go back on him he would have him hung higher than Haman. To such preposterous stuff, from professional perjurers, did the zealous Ashley seriously incline. It was during this investigation that the evidence given by Secretaries Seward and Stanton and by Attorney-Generals Speed and Stansbery, demonstrated the utter futility of an attempt to establish complicity in the assassination on the part of Davis, Thompson and the rest, by witnesses who had been shown, in other cases, to be unworthy of a moment's belief.