Lawrence Lessig announced on his blog:
So I've launched the exploratory committee for a run to be a "referendum president." I'd serve only as long as it took to pass fundamental reform -- the Citizen Equality Act of 2017 -- and then I'd resign. Here's the video explaining the launch (5:55m) and the video explaining the idea (2:51m).
The Huffington Post wrote about this:
Lessig, a Harvard law professor, will be a distinctly unconventional White House aspirant. In an interview, he said he will run on a singular platform: the Citizen Equality Act, which includes campaign finance reform, an end to partisan gerrymandering, and a vast expansion of voting access that would make Election Day a national holiday. Should he win and lead the passage of that agenda, Lessig said he'll promptly quit, handing the office to his vice president, whoever that may be.
Evidently, to get some air time he should insult Mexicans and women, particularly Megan Kelly (and Rosie O'Donnell).