The grassroots movement against the TransCanada Keystone XL tar sands oil pipeline. Protesters across the country mobilized against plans to build the Keystone Pipeline from Alberta, Canada, to Texas. Critics of the project argued that the dirty tar sands oil transported in the pipeline would devastate the ecosystems and water supplies of the communities along the route. Meanwhile, proponents, including congressional Republicans, said the project would create jobs. In December 2011, the Republican Congress approved a two-month extension of the payroll tax cut and unemployment insurance with a provision that President Obama make a decision on the Keystone XL pipeline within two months. Obama was expected to make an announcement rejecting the project January 18.