Presumptive Republican presidential candidate Donald Trump speaks at a campaign rally, May 25, 2016 in Anaheim, California. 
Donald Trump said that if he is elected US president he would support the Canadian Keystone oil pipeline project that was blocked by President Barack Obama on environmental grounds.Speaking just after he won enough primary delegates to seize the Republican nomination for the White House, Trump told reporters that the project for a new pipeline to carry Canadian crude to the Gulf of Mexico 'should be approved.' / AFP / ROBYN BECK        (Photo credit should read ROBYN BECK/AFP/Getty Images)