US Immigration from Luxembourg

So much information changing daily, hourly, minutely, secondly, etc.

I was looking to go to the US last year, but then they stopped flying planes and doing these stupid things here in Canada.

Anyways do we need the covid19 vaccine just to enter the USA to visit by plane from Canada now? Or is there a due date that's set?

I wanted to invest and enter under EB-5 Green Card Visa after 2 trips and apply. But I also heard Starting Oct 1st you need the Vaccine to apply for a Green card.

I am also planning on doing exemption. To many horror stories from people I know personally. So I am scared to take this thing.

Hi I grew up in the US on an expired 6 month visa. My family never took care of my paper work. I was deported in the early 2000s. My 10 year bar is over. Can I return to the USA? My 10 year bar has ended over 5 years ago. I am now a Canadian citizen as of last year.

Will I have a hard time because my visa expired as a kid and I was deported?

Thank you.