In 2013, United States Democrats were concerned that Keystone XL would not provide petroleum products for domestic use, but simply facilitate getting Alberta oil sands products to American coastal ports on the Gulf of Mexico for export to China and other countries. In January 2015, Senate Republicans blocked a vote on an amendment proposed by Senator Edward J. Markey, D-Mass., which would have banned exports from the Keystone XL pipeline and required that the pipeline be built with steel from the United States.