Didn't we adopt them as our own in the Withdrawal Bill?
Yes because we had no choice.
This and the immigration bit are where I believe the rabid "leavers" in parliament led the proles up the garden path and dropped them in the pond.
We have to retain EU laws otherwise we have a gaping hole in our legal system which cannot be allowed.
Net EU immigration in 2016 was 74,000 out of a total 248,000, by my reckoning 248k less 74k is few more than the tens of thousands bandied about and those 160k+ are the ones we have little control over.
EU workers taking UK jobs? Well not in agriculture see Tolpuddle Martyrs; nor in catering. There were issues ten to twenty years ago with French labour taking jobs Brits would not in hotels along the south coast.
Grayling's idea of self sufficiency in food is beyond parody. We nearly starved to death in two world wars and rationing in 1951 was stricter than in the war years. We relied on plundering our Empire for more than a century for our food stuffs.
So that's a few key planks of the leave campaign well and truly mullered......but we were not told that.