Having trouble finding an apprenticeship: Could the bad economy be the reason? (US)

I'm having trouble finding a company to take me on as an apprentice. I've emailed a couple of companies making it clear that I have no previous experience, but would like to work hard and learn. I haven't heard from anyone, but I've also been lead to believe the bad economy (in the US) could be a big reason why; companies not having enough work or not being able to afford any help. Do you think there's truth to this?

And if so, should I keep trying or possibly put it on hold until things get better? Thanks.