The pipeline was originally scheduled for completion by the end of 2019.
However, US sanctions aimed at companies working with Moscow have caused major delays for the project.
In January, the US sanctioned the Russian pipe-laying ship Fortuna.
And Mr Biden has warned further actions against firms in the project.
One of many aspects of the project that have recently become targets of renewed US sanctions against Russia in response to Moscow’s ongoing dispute with Ukraine.
Russia currently occupies the Crimean Peninsula, which both Washington and Kiev have protested against.