As a regular operator to the US and EWR in particular I find that the usual request is to maintain 190 to 4nm. However, I am often asked to maintain completely unrealistic speeds, the worst being 210 to DOOIN (1700ft) on the glide slope. On informing the guy that his request was not possible to carry out and 170 was the best I could do I was severely chastised, taken out of the pattern and vectored for 25 minutes, probably as a punishment. It seems that controllers in the States have little consideration for the capabilities of different aircraft types to slow down and go down, or of the requirements to be stabilized on finals, which in my companies case is by 1000ft.