The Radical Republicans in Congress and their actions pre-dated and presaged Lincoln’s executive role.
The matter was settled by force of arms, when it could have been much earlier settled with money for property that could have been widely manumitted. But that was never the plan, not for the South or for the Western expansion. The tables have certainly turned since then for the proper Bostonian slave traders and opium runners that continue to try to tell us all what to do.
Nice try.
The Republicans didn't control Congress in the session that preceded Lincoln's election, nor did they in the Congress before that. The Speaker of the House was a Democrat from South Carolina, the Senate President was from a Democrat Kentucky. Both supported slavery.