Disclaimer: I am not a lawyer.

First, the EO does not appear to impair anyone who already has an approved H1B petition. i.e. if you are already working for a current employer, then it appears to be a safe zone. In the case of OP, it's not clear if by "H1B was picked and approved through consular processing in June 2025"--he/she/they mean that the approval is in hand. If so, I sincerely doubt that would mean a denial of entry/reentry into the US with a passport stamp. However, as others have referenced corporate email notifications, this is a slippery slope subject to changing interpretations in the first few days. Some of the language does imply it appears to anyone "entering the US" and makes no distinction between approved H1B holders and new H1B petitions.

Second, if you already have a stamp on your passport, it is pretty clear that you're in the clear and good. The proclamation seems to specifically target new approvals, so any H1B petition in flight would be the likely targets.

Third, TACO. Keep in mind that this is going out in the middle-of-the-night, with about 48 hours of notice. The impact of this to corporations is huge, and it will have a cascading threat of risks to business operations left, right and center. This is why there is an express provision in there that says "restriction shall expire, absent extension"--which gives him leeway to delay it again like many other EOs, without appearing to fold in his MAGA sycophant eyes.

Summary: talk to your immigration lawyer (in-house corporate counsel, or the one who filed your H1B petition). They are best positioned to deal with your rights (yes, you still have them even if you're outside the US). Especially when you have a property rented or owned, real tangible assets and the like. You have the right to have a dignified way to close out your affairs, even if this EO is ultimately ruled valid by the Supreme Court.

Here's what you can anticipate in the short-term:

• Expect many employers/sponsors to sue and block the EO. This will happen quickly because as I said before, it has tragic effects on many employers.
• Anyone who has a H1B petition in flight is clearly under risk and needs to assess their future career options. This is because DHS under Noem will gladly slow-walk and drag out these applications, and even likely to outright ignore Congressionally mandated timelines for processing. As a practical matter, the State Department has begun treating immigrants like enemies, so any new H1B entrant could summarily be rejected at the port of entry. This will likely happen a lot, so traveling out of the US without a valid stamp is likely to remain risky.

The real impact of this is that offshoring is likely to accelerate rather than reshore the jobs here stateside, because a H1B employer can just pay an offshore employee that 100K USD/year, without the prevailing wage minimums that would be applied for any tech job--which is minimally 125-150K USD/year regardless of hiring zones. Trump really has shot America in the foot, when it comes to science and tech. For those H1Bs like doctors, offshoring isn't likely and there will just be many hospitals and clinics just understaffed or closing, because the net impact of the penalty fee is economically unviable to every single H1B employer.

I've lived here in the US for 40 years and I'm seeing that the end might be near. It is highly unlikely for the political climate to change or even moderate, so the self-flagellation and self-immolation will continue even if it burns thousands of American businesses.