The one I am most familiar with is the issue of Extraordinary Ministers of Holy Communion pouring from the caraf into the chalices. This, of course, means the continuation of the use of the caraf. At issue here is a perception that Rome has where few people go to Mass, and so one or two chalices are sufficient as opposed to the American experience of 300 - 900 going to communion at a single Mass and many chalices being required. Since not all Masses have a deacon to assist with the pouring, it becomes problematic for the priest to pour. It is also difficult for Rome to understand that this can be done without spilling. As a result, the instruction points to abuses that, frankly, are not happening. The bishops have asked for an indult to permit the EMHCs to continue to pour into the chalices which is, in the United States, permitted under particular law established by the National Council of Bishops who were given the faculty to make such law.
Deacon Ed