I signed it; good luck to your family.
I signed the petition. We have an internationally adopted daughter. During the early stages of our adoption and adjustment period, I belonged to a webgroup for adoptive families from Eastern Europe. I'm sure there is such a list for Asian adoptions -- does your family belong to such a list, and if so, has the petition been circulated among the listmembers? That would be a way to gather more signatures. Just a suggestion :-D
And I'm sure you've thought of this, but just in case, have you contacted your senator? I think at one time our senator had a special person or department for adoption matters.