Nick Fury tells Tony that Anton Vanko is the other side of the coin for the Arc Reactor and when Howard found out that he wanted to make money off of it, he had him deported. Essentially since Vanko already defected from Russia, getting sent back would surely mean that his life would be made a living hell and he was sent to Siberia for a while where he bred hated for the Stark family. Now the line isn't clear so either Vanko wanted to make money off of it and Howard deported him because he had better intentions since he wasn't to start an energy race to rival Nuclear reactors or Howard wanted to make money off of it so he got rid of the competition. Since Howard already says to Tony in his video that he didn't have the technology to complete it fully its really left unclear what the situation was.
Its hilarious that it wasn't okay for Vanko to make money on it but it was okay for Stark to make Billions on sales of weapons.