Keystone XL only benefits the Chinese. It's strictly an export pipeline that would increase Chinese profits at the expense of the US taxpayer.Some of Trumps policies were so effective and good for America that they were no-brainers.
Why you would decrease domestic gas extraction options and shut down a beneficial pipeline coming from Canada is beyond me. All of the arguments about pollution are put to rest and should be mocked now that the Nord Steam pipeline is built.
Good for Russia and Germany I presume. America doesn't seem to demand much from their allies when it comes to dealing with apparent dangerous nations. It's all a bit puzzling the way Merkel has rejected and even thumbed her nose at America of late.