Thousands of items from Lego’s “Pick a Brick” service are no longer accessible to customers in the U.S. and Canada starting this week, which may complicate things for hobbyists wishing to personalize their sets and replace missing bricks. You can likely attribute this to President Donald Trump.

Pick a Brick is an online resource provided by the Lego Store that allows fans to purchase individual pieces for as low as three cents. The Lego news and review platform New Elementary notes that “thousands of elements” from its “Standard” collection were taken off the service for North American customers on Aug. 25. Around 1,500 parts from its popular “Bestseller” collection continue to be available.

Lego is referring to the removal as a “service pause” in a message displayed at the top of the Pick a Brick landing page. “In the US & Canada, Standard pieces are temporarily inaccessible,” the message states. “You can still explore our Bestseller range which features thousands of the most sought-after bricks and pieces available for order.”

Mashable has contacted Lego to understand why the company has ceased shipping a portion of its selection, and we will update this article if we receive a response. However, as noted by New Elementary and others, Trump’s tariff policy is likely the reason.

More specifically, Trump has abolished the “de minimis” import regulation that exempted packages from taxes and customs duties such as tariffs if their value was under $800. This change was implemented on Aug. 29, four days after New Elementary highlighted the disappearance of the Standard pieces.

USA Today reports that over 30 countries have halted shipping to the U.S. in light of the end of de minimis — including Belgium and the Czech Republic, where Lego maintains distribution centers. According to New Elementary, Standard Pick a Brick items are stored and dispatched to North American customers from Lego’s European warehouses, while Bestseller items are housed in the U.S.

AFOLs looking for Standard pieces that Lego no longer offers may find success on third-party platforms like BrickOwl and BrickLink.

After terminating the de minimis exemption for imports from China and Hong Kong in May, Trump mandated its global cessation in July. A White House fact sheet announcing the suspension of de minimis described it as “a catastrophic loophole used to, among other things, evade tariffs and channel hazardous synthetic opioids as well as other unsafe or below-market goods.” However, as Mashable has reported earlier, the removal of the exemption will lead to higher prices for U.S. consumers on previously inexpensive products, and compel small businesses that depend on international products to choose between absorbing the new costs or raising their prices.