Trump 2nd term live updates: More executive action plans for Day 2

All federal employees working on Diversity, Equity and Inclusion (DEI) programs and initiatives must be put on paid administrative leave by Wednesday at 5 p.m., according to an Office of Personnel Management memo obtained by ABC News.

The decision comes as the Trump administration shuts down the relevant DEI offices and programs across the federal government.

The directive follows President Donald Trump's signing of executive orders Monday to dismantle federal DEI programs, as part of Trump's larger campaign vow to reverse and upend the diversity efforts across the country, in the public and private sectors.

-ABC News' Ben Siegel

During his AI infrastructure announcement, Trump threatened to impose tariffs on the European Union, as he has done with Canada, China and Mexico.

"It's not just China. China is an abuser, but the European Union is very, very bad to us," Trump told reporters after the announcement. "They treat us very, very badly. They don't take our cars. They don't take our cars at all. They don't take our farm products. Essentially, they don't take very much. We have a $350 billion deficit with the European Union."

"They treat us very, very badly, so they're going to be in for tariffs."

Trump said Biden gave a "very nice letter" before he left office and that he appreciated it.

"It was an inspirational-type letter," he said. "Do a good job. Important, very important how important the job is."

Trump said he is eyeing Feb. 1 as the date to start implementing his tariffs on China and Mexico.