You are correct. U.S. House.
He supported colonization efforts financially on more than one occasion, and formally joined the national ACS in 1856.
Colonization also played a role in Lincoln’s lesser known 1854 bid for the United States Senate.
The accuracy of the rest of your post leaves a lot to be desired as well. Lincoln never wanted to "deport" anyone. He supported voluntary emigration but then so did a lot of people including Robert Lee. Lee's concerns were not so much with blacks assimilating into the U.S. as he was with whites accepting free blacks assimilating into the U.S. society. History has shown that Lincoln was completely right in that. Witness what has happened to African-Americans throughout the country up to the mid-20th Century and later.