The Republican Party was founded as an anti slave party thus the answer is the Republican Party.
<span>John Hay was the US Secretary of State in 1899. He presented a proposal that gave everyone equal access to Chinese markets in all nations an upheld the unity of the Chinese Empire. After voicing his proposal, none of the other imperialist governments opposed the idea, when he was met with no disagreement, he proclaimed all major states that held any economic interest in China had then agreed to the Open Door Policy.</span>
