This is highly unconstitutional on many levels, and will likely be dismissed by the Supreme Court, but the fact that it's even being considered by the administration as an option is disturbing.
Other nations such as France and Australia are locking people in their homes and preventing them from traveling or performing basic essentials activities like grocery shopping without proof of vaccination.
> Federal employees, federal contractors and health-care workers at facilities that receive federal funding must show proof of vaccination, with no testing option.
> 80 million U.S. workers will have a choice between providing proof of vaccination or submitting to weekly Covid testing.
Your examples of France and Australia are also not accurate. According to [1]
> There may be circumstances in the future in which proof of vaccination will be required, such as border or re-entry requirements, or continued employment in particular areas. One example of this is the mandatory vaccination requirements for all residential aged care workers which will come into effect on 17 September 2021 in line with relevant state and territory directions.
For France there is no mandate like you described [2]. No one is keeping anyone from doing essential things like grocery shopping, I don't know where you got that from but I suggest you do some research.
[0] https://www.cnbc.com/2021/09/10/what-you-need-to-know-about-... [1] https://www.health.gov.au/initiatives-and-programs/covid-19-... [2] https://www.rfi.fr/en/france/20210930-health-pass-becomes-ma...