The head of the Russian company said it would take longer to build.
Donald Trump has signed a law on the defense budget, which spells out sanctions on the project.
At the parties, during talks reached agreement in principle, but details are not disclosed.
The parties plan to discuss an agreement on the duration, volumes and tariffs of a future transit contract.
The company formally responded to Gazprom with a proposal for gas transit.
Earlier, the Minister of Energy of the Russian Federation told about the launch of the pipeline until the end of 2019.