At the time he was charged by the Southerners with coming down into the South to interfere with slavery, but he and his colonists disclaimed any such purpose, saying that he neither intended to interfere nor have any part in the slavery movement. He said further that he could support the negro power and a steam engine for $10 a year, while it was costing the southern slaveholders $150 a year, and that at the time he came into Virginia land was worth but 50 cents to $1.50 an acre, but that his free settlement had made it worth $50 an acre. A man named Jenkins, afterwards a rebel officer, appealed to Gov. Henry A. Wise to exterminate this colony of abolitionists, but the governor said that they came into the state in a peaceful way and that anything which tended to increase the wealth should be protected. Considerable progress with the colonization scheme was made in other states, especially in North Carolina, but the John Brown raid and the opening of the rebellion brought the enterprise to an end. After the war Charles B. Hoard, a member of Congress with Mr. Thayer, came into possession of the property at Ceredo. The project caused Mr. Thayer a loss of $118,000. Mr. Thayer was appointed a special and confidential agent of the treasury department and served as such in 1861–’62. In 1862 he proposed to Secretary Stanton a plan for the military colonization of Florida, which was approved by President Lincoln, all of the members of the president’s cabinet excepting Seward, and by nearly every Republican member of Congress, as well as by Generals Hunter, Hooker and Garfield. According to the plan, Mr. Thayer was to go as military governor and General Garfield as commander of the forces. This plan was under consideration for several months by the president’s cabinet and was sustained by great meetings in New York City and Brooklyn by such speakers as William Cullen Bryant and Cassius M. Clay and others of equal note. Capitalists came forward with offers of steamships, and other means and regiments were offered from several of the states, but, like other notable plans which were never carried out, this plan was prevented from being put into operation by exigencies of the times. He remained with the Republican party until the impeachment of President Johnson. He was a Democratic candidate for Congress in this district in 1874, and also later, in the first instance nearly defeating Senator George F. Hoar, reducing the Republican majority from 7,000 to 300.