Is there a legal path for overturning Nixon vs US (not to be confused with US v Nixon)?
<p><a href="https://en.wikipedia.org/wiki/Nixon_v._United_States" rel="nofollow noreferrer">Nixon v US</a> established that impeachment is not <a href="https://en.wikipedia.org/wiki/Justiciability" rel="nofollow noreferrer">justiciable</a>.  However, this provides a path for it to become a carte blanche unrestrained power of Congress.  This is a far cry from its intended aim of being a power which would only be exercised with a great self-restraint by Congress.</p>

<p>Can this decision reach the SCOTUS only via a case brought by another impeached party?  Or is there another legal path for SCOTUS to consider it again?  Is there a path through an injunction?  I am not asking what would guarantee its overturn.  I am only asking about how the legal system works to make it possible (if a plaintiff succeeds in all challenges which they bring).</p>

<p>While this does not really directly answer your question of overturn, but this might somewhat directly address your original concern.</p>
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<p>This provides a path for it to become a carte blanche unrestrained power of Congress.</p>
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<p>This statement seems a bit misleading. It seems to indicate that Congress now is unfettered to abuse its impeachment power, but this is not true, because Congress is divided into two halves that place check on each other:</p>
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<p>The House of Representatives ... shall have the sole Power of Impeachment.</p>
<p>The Senate shall have the sole Power to try all Impeachments.</p>
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  <p>Can this decision reach the SCOTUS only via a case brought by another impeached party?</p>
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<p>Yes. A case may only be brought by someone who has suffered or will suffer an actual injury.  The courts have established that a citizen's interest in the constitutionally correct functioning of the government is insufficient.</p>

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  <p>Or is there another legal path for SCOTUS to consider it again?</p>
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<p>No.</p>

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  <p>Is there a path through an injunction?</p>
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<p>Who would issue such an injunction?  What act would it enjoin?</p>

<p>The court is very unlikely to take such a case.</p>

civil-procedure us-supreme-court