On August 22, local time, former US President Donald Trump threatened to impose high tariffs on countries that do not accept deported immigrants.

Bloomberg reported that if he returns to the White House, U.S. immigration and trade policies may be closely intertwined.

"Those countries will accept them back, and if they don't, we won't trade with them and we'll charge them huge tariffs," Trump said at an event in Montezuma Pass, Arizona, on Thursday.

Immigration has been one of the core issues of Trump's campaign. He has repeatedly promised to build a wall along the entire length of the U.S.-Mexico border and vowed to carry out the largest deportation of illegal immigrants in U.S. history. Polls show that most Americans support stricter restrictions on immigration.

In addition to immigration policy, Trump also regards his signature high tariff policy as a key component of his economic strategy. Not only has he implemented tariffs on multiple trading partners during his term, he has also stated that the tariff strategy will continue into the future, whether against competitors or traditional allies.

Trump also visited the U.S.-Mexico border on Thursday and stepped up his attacks on Democratic presidential candidate Kamala Harris, accusing her of being soft on immigration and border security.