Well, not his per se, but he put into the mouth of one of his most protagonistic and Heinleinish characters.
And turns out, it's pretty damn stupid.
A minority of a minority with the power to block, stop and defund anything they please (under threat of blowing up the economy) is exactly what we have now.I note one proposal to make this Congress a two-house body. Excellent — the more impediments to legislation the better. But, instead of following tradition, I suggest one house of legislators, another whose single duty is to repeal laws. Let the legislators pass laws only with a two-thirds majority... while the repealers are able to cancel any law through a mere one-third minority. Preposterous? Think about it. If a bill is so poor that it cannot command two-thirds of your consents, is it not likely that it would make a poor law? And if a law is disliked by as many as one-third is it not likely that you would be better off without it?-- Professor Bernardo de la Paz, "The Moon is a Harsh Mistress"
How much are you loving it so far?