Switching from TN to H1B

I currently hold TN status and live and work in the US. My current employer applied for an H1B and just received notification of acceptance (I-797 received, no I-94 attached as application submitted before I obtained my TN). I am a Canadian citizen. I have read on several forums that as a Canadian citizen, I do not need to go to a US Consulate to get a visa. Furthermore, I have read that I cannot get a visa at a US consulate. Supposedly I can simply obtain a new I-94 at a POE if I show up with my I-797 and passport.

Being the nervous type, I would like to know where people get this information from. Is it available on the USCIS website? Thank you!

I think you would do is, to go across the border and tell them, you like to activate the H1B and show them the I-797. I think that's it.

I am the nervous type too. But, H1B is not like TN. It is already approved, you just go for a I-94.

Kodreaming is correct.
If your I-797 had an I-94 attached, you wouldn't even need to do that. You woul;d be instantly in H1 status.

make sure you advise your employer when you make the switch, as you need to have a new I-9 on file.

Thanks for the quick responses and the tip about updating the I-9 with my employer. Your responses confirm my suspicions. I do wonder if this is documented on the USCIS website or perhaps on some of the consular sites?

You can look at any US consular site in canada and they will show that Cdns can't get visas for the status you are asking.

As to I-94 entry, once the petition is approved USCIS does not control that --CBP does. Your only other choice is to submit an I-539 to change status.

In any event, browse all you want, but off to the border you go.