The Clintons had no such "issue." 

A charitable foundation is not personal wealth. And a speech by a spouse for money hardly forms the basis for a quid pro quo. Each Bill Clinton speech during Hillary's SoS days, in distinction to the mystery of Trump's biz, was approved, in advance, by the government. Conflicts are not conflicts when disclosed and independently approved. Why doesn't Trump do this? He has a friendly (& corrupt) Congress.

Finally, voters are not granted ANY constitutional power to void the emoluments clause. Only Congress, by vote, per emolument, can so authorize. Short of that, receiving emoluments is without exception PROHIBITED. 

"the fact voters had this information and made their choice" - indeed, voters chose Clinton (an inconvenient fact that won't go away). I am unfamiliar with this form of constitutional amendment! Query: if someone runs for President and wins on a platform of abolishing the 2nd Amendment, does the Amendment disappear on Inauguration Day?