The United States has ended tariff exemptions on small packages entering the country from abroad, in a move that has sparked concern among small businesses and warnings of consumer price hikes.

President Donald Trump’s administration cited the use of low-value shipments to evade tariffs and smuggle drugs in ending duty-free treatment for parcels valued at or under $800.

Instead, packages will either be subject to the tariff level applicable to their country of origin, or face a specific duty ranging from 80 dollars to 200 dollars per item.

But exclusions for some personal items and gifts remain.

Trump’s trade adviser Peter Navarro told reporters that closing this “loophole” helps restrict the flow of “narcotics and other dangerous and prohibited items” while bringing fresh tariff revenues.

The UK’s Royal Mail, which took a similar step, announced new services Thursday for customers to continue sending goods to the United States.

On Tuesday, the United Nations’ Universal Postal Union said 25 member countries’ postal operators had suspended outbound postal services to the country.