Not practical at all - it just won’t work.
I deal with US lawyers a lot, and they are a demanding bunch, so I can just see how that would go down with them! Fact is, if it did come to pass, people in the ‘professions’ and other occupations where time is of the essence and people are used to, and expect to, only deal with an individual, the working patterns for them won’t change.
May work for shop floor widget makers, although as previously mentioned the employer won’t like it having to employ more people, and the consumer won’t like having to pay more for their widget.
The is just another I’ll-thought out idiotic idea to add to their other idiotic ideas like punishing the ‘rich’, free broadband, a gazillion trillion extra spending, and so on.
We’re still early in the campaign, so I wonder what other fanciful nonsense will appear from them between now and the election.