Originally Posted by
oneofthosepeopleyouloveto hate
Not a prohibited item, so you should be OK unless you get an idiot TSO who perceives it as a weapon! I'd say there's about a 1% chance of that happening.
There are 2 million passengers a day in the USA. 1% of 2000000 = 20000. You estimated there are potentially twenty thousand permitted items being confiscated by idiot TSOs a day.
That is probably about right.