Most usually, by truck. Depending on the city in Mexico where the clothes were manufactured, the truck may take different routes to reach Seattle; the most common route however, would be the Mexico City - El Paso - Seattle, along the I-84.
it means "made in mexico" - i.e. on a clothes label?
Most of them are (surprise!) made in China. There is however, a still-alive-but-struggling clothing manufacturing industry in Mexico.
About 1350 miles to the border.
Seattle, to Mexico City is about 2850 miles.
it depends where you go in Mexico
Its around 2800 miles so it would take somewhere around 48 hours to get from Seattle to Mexico City.
Yes. It should be written as: Mexico City, Mexico. It is like saying Seattle, Washington or London, England.
some True Religion jeans are made in China
They can bring their clothes on their personal baggage, but they cannot "import" clothes (e.g. send them through DHL, UPS or FedEx into Mexico)
3178 miles
2,850 miles.
1274 miles