If we enter from U.S side, Is it necessary to bring our passport or any other identity card like driver license is fine?

Yes, you can enter from Canada.

Not required, but a good idea to bring it anyways.

If you plan to cross into Canada through the park you will need to bring proper identification.

No passports needed for US side. Canadian can enter but when they leave they just need to show some ID to the CBP

Ok but people can enter through canada ryt

No, because you stay on the US side. The Canadian side is closed and all the meetings are in Washington.