You are joking? Aren't you? US beef is produced under industrial conditions on vast farms with lower welfare with heavy use of growth hormones that are banned in EU.
You think that's fair competition importing cheaper, lower quality, lower welfare meat to put British farmers out of business? Aren't you concerned about animal welfare? Do you care what your kids eat?
Some people seem to have a bizarre chip against those who go out often day and night in all winds and weathers to produce the food they need for survival.