Washington (CNN)President Donald Trump signed an executive order on Thursday directing some federal agencies to only purchase certain drugs and medical materials when they are made in the United States.
The scope of the order remains unclear, because it will direct the FDA to produce a list of "essential medicines, medical countermeasures and critical input" that will be covered by the new requirements.
The move will undoubtedly mark a shift in the way the US sources its drugs and medical supplies moving forward.
"The executive order will require that US government agencies purchase all the essential medicines that we need from American sources," Trump said during a speech at a washing machine plant in Ohio. "The executive order will also sweep away unnecessary regulatory barriers to domestic pharmaceutical production and support advanced manufacturing processes that will keep our drug prices low and allow American companies to compete on the world's stage."
White House trade adviser Peter Navarro previewed the action earlier Thursday saying the US is "dangerously overdependent on foreign nations for our essential medicines, for medical supplies ... and medical equipment like ventilators.
The order "establishes a base level of demand to attract a level of investment sufficient to provide for the needs we have for these things we need in times of trouble," Navarro, a trade hawk, added.
India gets around 68% of its raw materials -- known as active pharmaceutical ingredients (APIs) -- from China.
Thursday's executive order will also eliminate some regulatory barriers for manufacturing and pharmaceuticals in the US. Specifically, Navarro said the order would target manufacturing regulations imposed by the US Food & Drug Administration and the Environmental Protection Agency.
Another component of the order will "catalyze advanced manufacturing in continuous manufacturing techniques," Navarro said.
The US Chamber of Commerce urged caution, saying: "careful implementation will be key to avoid driving up prices while strengthening supply chain security."
"Americans benefit from being able to procure medical products from a wide variety of domestic and international sources, and while shortages of a limited range of products must be addressed, different solutions are needed for different products," said Myron Brilliant, the chamber's executive vice president said.
"Every time you see a negative Big Pharma commercial against me remember, it means your drug prices are coming way down!" Trump tweeted on Wednesday.
During his speech in Ohio on Thursday, Trump complained about the ads and suggested that his actions on drug pricing and manufacturing have made him many enemies.
"So, I have a lot of enemies out there. This may be the last time you'll see me for a while. A lot of very, very rich enemies, but they are not happy with what I'm doing. But I think we have one chance to do it, and no other president's going to do it," he said.