United States: metallic and sturdy chess clock as hand luggage.

I am an amateur chess player and I am considering flying from the United States to Europe with the following chess clock:

https://www.amazon.com/Chronos-GX-Touch-Chess-Clock/dp/B0015V3ZZ0

I worry that the watch is a bit "scary looking". It's also quite tough and it's made of metal (aluminum), so I guess (my physics is a bit rusty) that it's like a Faraday cage with an almost empty space inside (basically, some small electronic components, some cables and two AA batteries). As such, I'm not sure how the equipment they use is displayed / recorded and if it could be of concern to operators.

Is it safe to assume that I will be allowed to take it in the cabin as checked baggage?
Or maybe I should take it with me to the airport already open so they can inspect what's inside? (There is a panel that you must unscrew to change the batteries or see what is inside, so a screwdriver is required).

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Leave the United States with ESTA

I'm from Germany and I have an ESTA approved. I already bought flights to the United States and came back and stayed for 6 weeks. But now I'm thinking about spending two weeks in Peru. Would it be possible to leave the United States to Peru and return to the United States after a few weeks with my ESTA?

Customs and immigration – Recent second Canadian citizenship traveling to the United States

Whatever they ask you, answer with sincerity. Never lie to immigration. If they catch you, you will enter a world of pain.

"Do you have, or had in the past, any other citizenship?" – The answer is yes. Be prepared to give details, but never lie. If you have nothing else to arouse your suspicions, you will probably be fine.

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You do not see this shit in Asia, Mexico, Russia, South America, the Middle East or Africa.

America is the only country that raises the LGBT movement above. But why?? Why why ??

People do not want that around their children.

It is annoying to see the signs of "All genre baths" everywhere I go.

[ Politics ] Open question: Why is the LGBT movement only happening in the United States?

You do not see this shit in Asia, Mexico, Russia, South America, the Middle East or Africa.

America is the only country that raises the LGBT movement above. But why?? Why why ??

People do not want that around their children.

It is annoying to see the signs of "All genre baths" everywhere I go.

Traveler for the first time from South Africa to the United States.

I am traveling to the United States in December. I am a student who visits her 6 year old friend now. The problem is that the friend pays the plane ticket and all the expenses of the trip. in my visa interview Is there any kind of suggestion about what I can do? Please help

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I'm the owner of a Canadian link, and I landed at the Atlanta airport this morning on a delta flight. Leaving by the plane, the security personnel (or airport worker) guided me to go down the corridor that I followed and ended up on the airport's train platform. I got on the train and got off at the international baggage claim area, and left the airport without any problems. I did not know it was strange until my friend told me that it is abnormal and that it could get me into a big problem. Should I call the airport or TSA or does this happen normally (or occasionally?)

Why can not we generate the output of a cellular automaton in time step t without first generating all the previous states?

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usa – B2 visa for 6 months of stay in the United States

My girlfriend is applying for a J1 visa to study in Texas for 5 months and 15 days. I want to travel with her and stay with her all the time. I will not study or work there.

I am Brazilian and I already have a B1 / B2 visa with expiration date in 2029 and, since I am not married, I can not apply for a J2 visa.

Relevant facts about me:
* As I will stay 5 months and a half, I will give up my work and live with my savings and my girlfriend's scholarship.
* Sufficient funds to stay all the time (I will bring 10K US with me, is that enough?).
* There are no houses in Brazil. Only one car, bank account, some furniture, etc.
* Parents and brothers in Brazil.
* Travel from August 2019 and return in January 2020.
* You will be there with the roundtrip tickets purchased.
* My girlfriend and I will travel on the same flight.

I traveled to Chicago this year (May) to stay for a week and the officer gave me a 6 month stamp, which expires in November 2019. Therefore, I think there will be no problem to stay 6 months according to the law.

But is it safe to travel there because I will stay there a lot of time with my girlfriend, who has a different visa?