ASIN is hidden

Switch to the USA marketplace and try to add product manually with the same ASIN you are using in the Canadian marketplace.

Riz if your ASIN is hidden then you should try list manually using the same ASIN in the USA marketplace.

Although the goods can be the same, make sure to check the brand on the listing. You cannot list it under that ASIN if the brand is different. If your brand is the same and still amazon shows that ASIN is hidden in the US marketplace then you can simply create a case with amazon but the best way is to directly call amazon and mention your listing issue, amazon will guide you on the spot, sometime the issue could be held from amazon side

Have you tried to list in the USA with the same ASIN and UPC? Is your brand name in both the USA and Europe the same? You should just call Amazon and then they will give you the best solution or reason why these ASINs are not hidden in the US market.