Then vote for a UK government that will do that. Why do you feel the need to infantilize the UK and give foreign countries the power to tell us what we can and can't eat?
We have relatively little negotiating power, compared with a bigger partner (the EU or the US). If the US want us to accept chlorinated chicken, then it won't matter if we feel infantilised, we will accept chlorinated chicken
The US will want us to accept chlorinated chicken:
The US Trade Priorities Act has negotiating objectives for any trade deal.
These include a requirement that "progress" is reached on Trade in Agriculture and in particular that the deal should:
encourage the adoption of international standards and require a science based justification be provided for a sanitary or phytosanitary measure if the measure is more restrictive than the International standard
That means we have to demonstrate the scientific basis for our not accepting the chlorinated and phosphated chicken which the US wants to sell us.
Not just "we don't believe it's safe, please demonstrate it is before we allow you to import and sell it"
But perhaps our government will tell the US to sling their hook. So no trade deal.
But then we'll fall on WTO rules which will require us to justify why the scientific and technical information we have is enough for us to discriminate against the US by setting UK standards which don't allow chlorinated chicken. In short: we need to prove why we put obstacles in place when people want to sell things to people in the UK. Note that we'll have to do this for anything any country wants to dispute with us: paint with a touch of lead, perhaps.
As an example the WTO made the EU pay $116m per year for banning hormones in beef sold in the EU. There was scant evidence on whether these were safe or harmful when the EU banned them, although at least one hormone was known to cause birth defects.
so I will not be able to vote for a UK government which goes for "safety first", because my country will have given up its sovereignty on what we can and can't eat: either through a US trade deal or through trading on WTO rules
OR WE COULD STAY IN THE EU and make a decent fist of things with the neighbours -a very British thing to do.