You are either misinformed, willfully ignorant or lying, and I've had it with this discussion style.
Yes, people who use "no one is illegal" do also say "no more borders". Not every single one, clearly humans are diverse, but your statement is just false.
Here a UK example even combining the statements (as I said, the movement is not limited to the US). https://www.jstor.org/stable/community.11073215
Another example, also showing this is an older movement (2005): https://www.statewatch.org/media/documents/news/2005/apr/int... ("No Borders/No One Is Illegal campaigns")