The USCCB Website has a page where you can voice your opposition to the Obama Adminsitratioins attempted removal of the "conscience clause" for medical professionals who object to performing abortions and engaging in euthanasia. The USCCB Page is here.
And Cardinal George has a very powerful statement on this issue, correctly describing it as a first step towards despotism:
"On Friday afternoon, February 27, the Obama Administration placed on a federal website the news that it intends to remove a conscience protection rule for the Department of Health and Human Services. That rule is one part of the range of legal protections for health care workers—for doctors, nurses and others—who have objections in conscience to being involved in abortion and other killing procedures that are against how they live their faith in God.
As Catholic bishops and American citizens, we are deeply concerned that such an action on the government’s part would be the first step in moving our country from democracy to despotism."
You can see His Eminence's statement here: