Generally, every imported or exported good is subject to marking regulations from at least one of the federal agencies. Marking requirements are enforced by physical inspection of the goods and also after release of the goods via a notice of redelivery and marking (CF4647). If Customs finds that marking is incorrect, they will delay the release of the goods until the marking is corrected.
Incorrect markings can result in delays and high expenses for remarking goods or may result in a liquidated damages claim against the importer for failing to redeliver the goods (example: when the goods were sold and shipped to buyers). Further, marking which is fraudulent may result in seizure and/or penalties.
Marking laws are not only U.S. Customs based. Customs enforces marking requirements for other agencies as well. For example the Federal Trade Commission requires clothing to have certain labels and information relating to fiber content, dry cleaning information, etc.
U.S. Customs marking requirements are as follows, the marking must be:
in a conspicuous place
have English name of the country of origin.