Donald TrumpGretchen Ertl / Reuters

If elected, presidential candidate Donald Trump plans to make Apple start "building their damn computers and things in this country instead of other countries."

Trump's ultimatum to the most valuable company in the world was made towards the end of a 45-minute speech he gave at Liberty University in Virginia on Monday.

The most popular candidate in the Republican party said he would impose a 35% business tax on American businesses manufacturing outside of the United States, as noted by Gizmodo.

Apple has manufactured its Mac Pro at a factory in Texas since 2013, but the vast majority of its products (including the iPhone) are largely made and assembled in China.

How Trump would force Apple's supply chain, which relies heavily on a vast network of suppliers and large factories throughout Asia, to be brought stateside remains unknown. Apple CEO Tim Cook recently called the U.S. tax code "awful for America."

You can watch Trump's full speech at Liberty University on C-SPAN.