Temporary suspension of acceptance of mail to the United States

There was chatter about this in one of the NYC subreddits over the weekend.

Apparently ending the de minimus exemption is closing the grey market for e.g. sunscreen; places that used to sell Japanese sunscreens on American shelves no longer are.

There's a frustratingly long list of goods that the US decided to put requirements on in previous generations, and then stopped maintaining. Sunscreen is one; other countries have invented sunscreens that feel better on your skin than the old styles, but aren't yet approved in the US. Motorcycle helmets are another. You may have seen the MIPS system - the yellow slipliner that's become popular in bicycle helmets. Scientists have realized that rotational impact leads to concussions and similar brain damage, but prior helmets only protected against naive impacts. Europe now requires helmets to protect against rotational damage. The US requires that manufacturers self-assert that they meet a very old standard that ignores rotational impact. They do not recognize Europe's new standard.

Closing these de minimus exemptions is making it harder for discerning consumers to buy higher quality goods than are currently available in the US right now. Protectionists are going to see this as a win.

More background on helmet standards:

https://www.youtube.com/watch?v=0BUyp3HX8cY

https://www.youtube.com/watch?v=76yu124i3Bo

The DOT standard isn't good, but the US doesn't disallow helmets that meet other standards. You can buy Bell and Alpinestars MIPS helmets in the US today, no gray market needed: https://www.revzilla.com/mips-motorcycle-helmets

You're on a tangent of a tangent, but:

Old school helmets use the philosophy that in a crash, you want your head to be harder than its opponent.

New school helmet use the philosophy that a helmet should absorb or deflect as much energy as possible, so that energy doesn't get translated to your brain.

They are actually diametrically opposed. Fortnine (the same channel I linked earlier) has a video on the SNELL standard. Its origins are as a beefier version of the DOT standard. They recently found themselves at a crossroads where it's impossible to both meet SNELL and meet ECE 22.06 (today's state-of-the-art standard). They ended up bifurcating SNELL into two standards: one that meets old DOT-based SNELL, and another that basically says "if it's 22.06, they can call it SNELL variant B." It was the only way they could keep the SNELL brand alive across both halves of the transition.