May I gently point out that DEHP is a very common chemical in household items? From the CDC website:
DEHP is present in plastic products such as wall coverings, tablecloths, floor tiles, furniture upholstery, shower curtains, garden hoses, swimming pool liners, rainwear, baby pants, dolls, some toys, shoes, automobile upholstery and tops, packaging film and sheets, sheathing for wire and cable, medical tubing, and blood storage bags.
https://www.atsdr.cdc.gov/ToxProfiles/tp9-c1-b.pdf
It's quite likely that the Samsonite luggage you buy at the outlet store will be made of similar materials, but if you don't live in California, there is no legal requirement to attach a warning label. The bag you saw at Ross may have originally come as overstock from California, hence the label.