The ACLU needs to be stopped!
THe ACLJ as well as the American Family Association lawyers are working against the ACLU. Both have wesites, and would welcome donations I am sure, and they generally work pro bono. Also the stoptheaclu.org site is a good place to start.
Any one of these sites can also direct you on what you can do. I do know, there is a nation wide praywr campaign going on all month to end the same sex marriage in MA. Never underestimate the power of prayer!
Asside from keeping up pressure on congress, thats what comes to mind at the moment.