Carry Baggage While Traveling to USA
Your purpose of travel to the USA will determine what you carry in your baggage. The needs of a person going to the USA as a short-term tourist may be different than that of the person going as a student or a temporary worker.

Unless you are traveling to the USA in the winter, you shouldn't need to pack many winter clothes. It is best to buy winter clothes and jackets in the USA itself, because most of the winter clothes in warm countries are not suitable for snow and ice.

You should carry a leather jacket, leather shoes, a leather belt, and a leather wallet (purse), as leather items are expensive in the USA.

You should not carry heavy utensils, but you should carry a pressure cooker if you are going to the US to stay there. Unless you absolutely need specialty spices, it is best to avoid carrying them. There are many Indian grocery stores and restaurants all around the USA and such things are easily purchased.

The big bags that go through cargo are check-in baggage. Hand baggage is the small totes you carry with you at all times. Put a small sticker on your check-in baggage indicating your destination address and telephone number. If you lose your luggage in the airport, do not leave the terminal until you file a complaint with the authorities.

Check-In Baggage
Most airlines allow a total of three pieces of luggage free of charge for each ticketed passenger - one carry-on bag and two checked items. International airports determine luggage allowance and luggage charges (if applicable) based on weight and number of pieces.

You can check the two big bags at check-in. At the time of check-in, they will take these bags for transport, and return them to you at the final destination. You will not see these bags anywhere in between. If your bags are not very strong, tie ropes so they can withstand rough handling.

Generally, total linear dimensions (length + height + width) of each checked in baggage must not exceed 158 cm (62 inches) and weight of each bag must not exceed 23 kg (50 pounds). However, exact dimensions may vary with different airlines, so it is best to check with the airline in advance.

TSA Approved Locks
If you are locking your check in baggage then always use Transportation Security Administration(TSA) approved/accepted luggage locks. TSA screens every passenger's baggage before it is placed on an airplane. While technology allows to electronically screen bags, there are times when TSA need to physically inspect a piece of luggage. TSA has worked with several companies to develop locks that can be opened by security officers using universal "master" keys so that the locks may not have to be cut. These locks are available at airports and travel stores worldwide. The packaging on the locks indicates whether they can be opened by TSA.

An example for TSA approved/accepted Locks are
a. http://www.safeskieslocks.com
b.http://www.travelsentry.org/

Hand Baggage
You can carry one piece per person. You should have all the important visa documents you carried to the embassy/consulate, because they might need them at immigration at the port-of-entry (arrival at the first international airport) in the USA. Also, carry in it one set of clothing and other necessities, like toothbrush, etc.

Each passenger is allowed one piece of carry-on luggage plus a briefcase/laptop computer/purse. In addition, each passenger may carry a coat, umbrella, cane, or other "special" item (see item listing below). Check all items you will not need during the flight. Medicine, keys, important papers, and travel documents (passports) should be carried on board by the passenger.

Carry-on luggage must fit underneath the passenger seat or in an overhead compartment. Maximum carry-on dimensions are 22" x 14" x 9" (carry-on must fit in carry-on size box located at check-in counters), and maximum carry-on weight is 40 pounds. Passengers traveling in first class, business class, or who have accumulated a lot of miles in their frequent flyer program (like gold members, silver members, etc.) may be allowed an extra carry-on item. This depends on the airline.

"Special" Items:
  • Coat
  • Umbrella
  • Crutches, cane, brace, or other prosthesis on which passenger is dependent
  • Collapsible manual wheelchair
  • One stroller
  • Infant Car Seat
  • Infant Diaper Bag
  • Two Golf Clubs (if approved storage space is available)
  • Reading Material
  • Camera
  • Two-Wheeled Luggage Cart (cart and bag must fit under seat or in overhead bin)

Infants
Infants not entitled to a seat are allowed one checked bag with total linear dimensions not exceeding 115 cm (45 inches), plus one checked or carry-on fully collapsible stroller or push chair, or an infant's carrying basket or car seat that may be stored in the passenger cabin subject to availability of space.

Disabled Passengers
Disabled passengers are allowed one fully collapsible wheelchair and/or crutches, canes, braces, and other prosthetic devices without charge over and above the free baggage allowance, provided the passenger is dependent on them. Fully collapsible wheelchairs may be stored in the passenger cabin if space permits and at the complete discretion of the airline at the time of check-in. Collapsible wheelchairs not permitted in the passenger cabin will be carried in the baggage holds.

Miscellaneous Articles
The following articles, irrespective of their actual dimensions, may be considered a piece of checked baggage at 158 cm (62 inches):
  • One sleeping bag or bedroll
  • One rucksack, knapsack or back pack
  • One pair of snow skis with one pair of ski poles and one pair of ski boots or one snow board and boots
  • One golf bag containing golf clubs and one pair of golf shoes
  • One duffel-type bag or a soft-sided zippered bag with zippered side panel (IATA Type 22)
  • One suitably packed bicycle (single seat, non-motorized touring or racing type) with handlebars fixed sideways and pedals removed
  • One pair of standard water skis or one slalom water ski
  • Suitably packed fishing equipment consisting of not more than two rods, reel, one landing net, one pair of fishing boots and one fishing tackle box
  • One portable musical instrument not exceeding 100 cm (39 inches) in length
Check the  U.S. Customs website for details regarding what you can and can't bring to the U.S.