Don't try to carry any Tape in carry-ons - or Any Tools.

[NW Dive Dawg]

Fully vetted and TSA- PRE approved USA tourists to Mexico should just have an ID card with a pic of an F35A and a notation that says...."Your Welcome.... We are here if needed to provide the worldwide freedom and protection that your country enjoys.....for no charge!

 

[ReefHound]

Tools under 7 inches are supposed to be ok but you never know how the agent is going to interpret it. And divers often have multi-tools to save space.

"In general, you are prohibited from traveling with sharp objects in your carry-on bags. Multi-tools (multipurpose tools) with knives of any length are prohibited. Please pack these items in your checked bags. Multi-tools (multipurpose tools) with scissors less than 4 inches may be placed in carry-on bags."

Multi-tools | Transportation Security Administration

In general, you are prohibited from traveling with sharp objects in your carry-on bags. Multi-tools (multipurpose tools) with knives of any length are prohibited. Please pack these items in your checked bags. Multi-tools (multipurpose tools) with scissors less than 4 inches may be placed in...

www.tsa.gov

 

[brett172]

I was told in the Philippines that my reg was not allowed at a carry on. so it is always a crapshoot....