"Teacherjh" wrote in message
...

If ATC issues a clearance which will cause you to violate the FARs, are
you legally bound to accept it?


No.

If you are in the air, you still fly your old clearance while you reject
the
new one and you and ATC work it out. If you are on the ground however,
ATC has
no incentive to work it out with you. You end up staying on the ground.

You are the one with the incentive to wotk it out in the air. ATC will give
you what you want if they can. But they may not be able to.