If a relative asked you to co-sign there lease, would you?

[cruz50]

So here are the details:

My brother in law asked us if we could co-sign for him. He acts like it's not a big favor. He wants to live closer to his college, which is 45 mins away from where he's living (his mom's house.) My MIL can't sign because she doesn't make enough and recently filed bankruptcy. He needs a co-signer because he doesn't make as much as they would like. His rent is about 450+Utilities. He lives in Michigan.

We live in California. He is trying to get us to e-mail him the applications. My husband doesn't want to feel like he's not trusting his little brother. I don't want to do it because I feel like our credit and bills fall from his responsibilities.

Please give me your insight on what to do?