Should McCain be 'probed' for lack of credibility?

Should McCain be probed for his lack of 'credibility'?

McCain: Congress doesn't have 'credibility' to handle Russia probes (link)

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Congress no longer has the credibility to independently tackle a probe of Russian meddling in the 2016 presidential election and President Trump and his associates' ties to Moscow, Sen. John McCain (R-Ariz.) said Wednesday.

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So, Should McCain be 'probed' for his lack of 'credibility'?

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Is McCain trying to bring the president to a tribunal to keep the information away from the public?

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There's always been something slightly off about McCain but if there's one thing that seems clear it's that he doesn't like Trump and is not impartial.

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