Why is Brian Williams held to a higher standard than Hillary Clinton?

Brian Williams "embellished" his story about being in a helicopter that was shot down in Iraq. In reality he was in the helicopter behind it, but the story was better when he LIED and said he was in the one forced to land after taking fire.

When the truth came out, he was universally vilified and suspended from his job as the lead news anchor for NBC. He eventually resurfaced on the B team at MSNBC after a lengthy hibernation, but the man's reputation has been eternally damaged.

Hillary Clinton also "embellished" her story about ducking sniper fire on the tarmac in Bosnia. She told reporters that she literally had to duck to avoid sniper fire after landing. The reality is, they were told there could be sniper fire in the area, but she was greeted by a large group of people on the tarmac, including children and soldiers. None of them appeared to be in a hurry or the least bit concerned about any bullets flying!

When the truth came out, turns out she LIED also to make her story sound better. When asked about it she gave some bullshit answer and everyone just moved on. She continues to lead the race for the Democratic nomination. No repercussions whatsoever for blatantly lying to the American public.

Can someone please explain to me why a television news anchor would be held to a higher standard of integrity than a presidential candidate?

Edit: Still waiting for the first HRC supporter to offer an answer to this question?