WASHINGTON — Democrats continue their rigorous questioning of President Trump’s nominees for cabinet positions and other important posts. Here are key moments from today:

■ Representative Tom Price of Georgia, nominated to be health and human services secretary, defended his investments in an Australian pharmaceutical company during his time in Congress. “The reality is that everything that I did was ethical, above board, legal and transparent,” he said.

■ Senator Orrin G. Hatch, Republican of Utah, lamented “the hyper-politicization of the nomination process.”

■ Representative Mick Mulvaney of South Carolina, the nominee for budget director, said that tackling government waste and reducing debt would be his top priorities.

■ The toughest questions that Mr. Mulvaney faced on Tuesday came from Senator John McCain, Republican of Arizona. He asked Mr. Mulvaney about his record of voting for cuts to military spending and appeared to be shocked when Mr. Mulvaney could not remember those votes.