My newish 144s are the first Indys I've seen without the "USA" stamp underneath the baseplate (non-forged). A sticker denotes, "MFG in USA from US & Imported Parts." Molding dies are costly, so I assume a blank baseplate allows Ermico/NHS to move anywhere without having to create new tooling. It could also be that charging a premium for imported forged baseplates is confusing to customers who see the USA stamp as a sign of quality.
NHS has been making trucks overseas for many years, so the transition should be seamless. Unfortunately, with Fausto Vitello and Eric Swenson gone, the Ermico factory is the last remaining vestige of the original founders' brand heritage.