Controversies surrounding the Keystone XL pipeline have arisen yet again due to the pipeline rupture that occurred in Arkansas suburbs just last week. Over 12 thousand barrels of heavy crude oil flowed into a residential neighborhood, rendering about 24 families homeless during the evacuation. Even though an around-the-clock cleanup began last Saturday, what will this mean for Pegasus pipeline, run by Exxon Mobil? And also, how will the leak affect public opinion regarding the implementation of the Keystone XL pipeline?