If immigration reform was already on life support in Congress, last night’s defeat of Republican Eric Cantor in Virginia may have pulled the plug, at least for any short-term legislation. But a reform activist says demographic trends are on the side of reform.If immigration reform was already on life support in Congress, last night’s defeat of Republican Eric Cantor in Virginia may have pulled the plug, at least for any short-term legislation. But a reform activist says demographic trends are on the side of reform.