What kind of jobs do credit checks?

So I’ve been out of a job for almost a year now. I can’t pay any of my bills and I got scammed out of all my money so I can’t even use my tax money to pay off bills. I have to file for bankruptcy and now I can’t open a bank account anywhere for 7 years.

My problem is landing a job. Now I know in today’s economy it’s hard, but I’ve applied to my old job when they were hiring. I worked there for 6 years and left on good terms, but I never get called in for an interview.

I know some employers do credit checks, but do all of them do? Isn’t this a bit unfair and counter productive? If someone has low credit it’s probably because they aren’t making enough money, there shouldn’t be a reason not to hire them simply for that.