There was never any actual evidence that Syria did squat.
Appears there was.
US Ambassador Nikki Haley told the UN Security Council that we should condemn Russia for stopping at nothing to defend the Syrian regime for using chemical weapons.
www.cnn.com
Your video of Nickey Haley as UN Ambassador. She resigned December 31, 2018, so whatever evidence the may have been two years ago, there's no evidence that Assad has done anything lately, so why would they be condemning Assad at this point.
Everyone in the world is slamming your a$$hats for racism and human rights abuses. Home of the brave, land of the free, my eye.