I am interested in exporting clothing from Thailand to the United
States.  I am interested in knowing aprox. what the duties are that
need to be paid in the U.S.  I will be exporting clothing for men,
women, and children (including toddlers and babies).  The clothing
will be either 100 percent cotton, 100 percent polyester, or a mix of
70/30 or 80/20 (70 or 80 percent being cotton).

For men and women I will be exporting mostly tops (shirts, blouses,
t-shirts with embroidery, sweat shirts, etc.) as well as some shorts
(active wear).

For children, toddlers and babies it will be tops, shorts, skirts,
pants, baby sets (body suit, booties, cap), and sets of tops and
bottoms (shirt and shorts for example) mostly.

I need a clear, concise, and easy to understand, chart or table, that
has the aprox. duty for each of these items/catagories.

http://www.customs.ustreas.gov/xp/cgov/import/duty_rates/determining.xml

The Harmonized Tariff System (HTS) provides duty rates for virtually
every item that exists. The HTS is a reference manual that is the size
of an unabridged dictionary.

Experts spend years learning how to properly classify an item in order
to determine its correct duty rate. For instance, you might want to
know the rate of duty of a wool suit. A classification specialist will
need to know, does it have darts? Did the wool come from Israel or
another country that qualifies for duty-free treatment for certain of
its products, where was the suit assembled, does it have any synthetic
fibers in the lining....


The U.S. International Trade Commission - Tariff Database link,
located to your right under "on the web" will take you to an
interactive data base that will enable you to get an approximate idea
of the duty rate for a particular product. Please be aware that the
duty rate you request is only as good as the information you provide.
The actual duty rate of the item you import may not be what you think
it should be as a result of your research. CBP makes the final
determination of what the correct rate of duty is, not the importer.
For very specific duty information on a particular item you may
request a Binding Ruling. You may also receive guidance by calling
your local CBP port.

For example, men's and boy's shirts of cotton is classification
6502.20.20, a 20% tariff if importing from a "most favored nation"
trade partner.  That is, if you paid US$1,000 for your lot of 5,000
Thai cotton shirts, your import tariff would be $200.

There are quotas for some textiles.  That is, U.S. Customs limits the
total amount of a certain textile that can be imported, presumably to
protect U.S. manufacturers.  You can read more about quotas from the
U.S. Customs website.

You can get more information on importing and tariffs from the U.S.
Customs website.
http://www.customs.ustreas.gov/xp/cgov/import/

Harmonized Tariff Schedule
http://www.usitc.gov/tata/hts/bychapter/index.htm
http://www.customs.ustreas.gov/xp/cgov/import/duty_rates/

It is always the importer's responsibility to perform due diligence to
classify and pay import tariffs, the risk is involuntary seizure of
imported goods at the port of entry.  It would be prudent to consult
an importing firm or a frieght forwarder until you are experienced
enough to handle it yourself.