Which Reconstruction plan set easy terms for the states to form new governments, and send representatives to Congress, but did not enforce the requirement that freemen be allowed to vote?

President Johnson's Plan.

Explanation: In 1865 President Andrew Johnson implemented a plan of Reconstruction that gave the white South a free hand in regulating the transition from slavery to freedom and offered no role to blacks in the politics of the South.  

The main purpose of Douglass in the speech "The Hypocrisy of American Slavery” (Given July 4, 1852) is to shame the American people specifically the people of Rochester, NY that asked him, knowing that he is a former slave to give a speech on the day of celebration of the American Freedom.

Here are some cites:

“Fellow citizens, pardon me, and allow me to ask, why am I called upon to speak here today? What have I or those I represent to do with your national independence?” - Paragraph 1

“Fellow citizens, above your national, tumultuous joy, I hear the mournful wail of millions, whose chains, heavy and grievous yesterday, are today rendered more intolerable by the jubilant shouts that reach them.“ - Paragraph 4