No one is encouraging people to just 'walk into the country', where are you getting this from? It's illegal, they try to stop it, it's not perfect (never has been). If you cross the border illegaly, chances are you have many years of hard work and uncertainty ahead of you before you can begin to feel a peace. Please don't glorify illegal immigration as if they're all just getting free meal tickets and living happily ever after. It's a very hard decision made after years of suffering, not an easy way out.
I just got my green card after 9 years of living on a TN. I've got a family -- my kids have spent about half their lives in this country.
Even though I was in legally and knew eventually things would work out, there's not one week that went by where I didn't think that if I lost my job I'd have to leave, or wasn't given a reminder that we're foreigners and could lose it.
To be in the country illegally and be fearful of losing it all at any time, or to claim asylum only to know there's a court date coming where you could get kicked out, well, I don't wish that on anyone.