The Socialist Party candidate for President of the US , Norman Thomas, said this in a 1944 speech:
"The American people will never knowingly adopt socialism. But, under the name of "liberalism," they will adopt every fragment of the socialist program, until one day America will be a socialist nation, without knowing how it happened."
He went on to say:
"I no longer need to run as a Presidential Candidate for the Socialist Party. The Democrat Party has adopted our platform.."