US President Donald Trump isn't looking to extend the July 9 deadline for trade deals, and told reporters traveling with him on Tuesday that no trade deal for Japan is likely.

"I'm not thinking about the pause," Trump said in response to a question about whether he would extend the deadline past July 9, which is the end of a 90-day pause on his so-called "reciprocal" tariffs.

"But I'll be writing letters to a lot of countries, and I think you are just starting to understand the process," Trump told reporters. "We dealt with Japan, I'm not sure we're going to make a deal. I doubt it with Japan. They're very tough."

The comments are part of Trump's pressure campaign on trade with other countries, which he began when he announced the "reciprocal" tariffs on imports from around the world on April 2. The Trump administration paused most of those tariffs on the expectation that trade delegations would come to Washington to negotiate deals for themselves rather than accept the administration's tariffs, which were mostly set at ranges from 20% to 49%.

So far, only one deal has been signed -- one with the U.K. -- despite administration promises that many more deals were in the works.

Trump complained during his meeting with reporters on Tuesday that Japan wouldn't accept rice imported from the United States and that it has maintained a lop-sided trade in cars, mostly benefitting Japan at the U.S.' expense, in his view.

"You have to understand they're very spoiled," Trump said, while at the same time praising Japan's new prime minister. "They and others are so spoiled from having ripped us off for 30, 40 years that it's really hard for them to make a deal."

Trump said in lieu of deals he'd be sending letters around that set tariff levels by country, and Japan will likely be one of the recipients of such a letter.

"For the most part we're going to determine a number and just very simply write them a nice letter, probably one page or a page and a half, " Trump said.

A deal with India could be in the works, Trump said later in the conversation with reporters.