In photos: Mandela's life in the spotlight
Lindsey Graham also said that Trump going after Robert Mueller could be "the beginning of the end" of his presidency.
Top Republicans driving the GOP tax reform effort have given up on border adjustment.
Zinke's calls came after Trump tweeted Wednesday morning that Murkowski "let the Republicans, and our country, down."
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An estimated 71.6 million people watched the final debate between White House contenders Hillary Clinton and Donald Trump on TV on Wednesday.
Clinton and Trump agree on this issue, but they're both wrong about how to fix the problem, says Pinar Çebi Wilber.
There isn't a "chorus" behind Donald Trump's debate performance, experts told CNBC.