Yes, you can carry cash in your pocket through airport security. However, it is recommended to declare any amount over 10,000 to the customs authorities.
You can carry one phone from the USA to India without customs.
To carry out the nation's foreign policy.
In the United States a partnership should be registered pursuant to state laws with the secretary of state in the state where the partners carry on their business.
Customs
It depends, if you walk in wearing one they probably won't let you through customs but they will probably let you have it in your bags but not your carry-on
The laws are different by state. Check with yours, or the state you will be traveling through. Most do allow it.
Yes, customs officials may check carry-on bags during international travel to ensure compliance with import and export regulations.
Depends on the size of the airport and whether you're passing any customs/state barriers or not. Travelling from the US to Europe for instance is passing a customs barrier, which usually means that you'll have to carry your baggage through customs yourself. Once inside Europe baggage can then be forwarded automatically pretty much regardless of how many connecting flights you have.
You can carry up to two phones to India without paying customs duty.
You can carry one phone from the USA to India without paying customs duty.
Yes, in accordance with the laws of the state(s) the driver is traveling through.