OTTAWA -- Prime Minister Justin Trudeau defended his Bahamas vacation, and coming tax changes in the wrap up of the Liberal cabinet retreat Wednesday.

During a press conference in St. John's, Trudeau fielded questions over a report that the RCMP bill for his controversial trip to Bell Island in the Bahamas cost more than was conveyed to Parliament.

"I’m not going to question the job or the choices that the RCMP makes," Trudeau said. "The RCMP provides a protective service for the prime minister and my family and does an excellent job of that," he said.

Trudeau made the trip with close personal friends, as the guest of the Aga Khan over the Christmas break.

"As for my future travel I will keep you appraised as is necessary," said Trudeau on Wednesday.

The federal ethics commissioner is currently investigating Trudeau over his use of a private helicopter to get to the private island.

Flanked by the members of his cabinet, Trudeau also faced questions over the government’s push to change the tax system to close loopholes currently being used by business owners. The government has faced backlash both from within the Liberal caucus, and from small business owners over the proposed changes.

The government's proposal includes limiting a corporation's ability to convert income into capital gains and dividends, halting business owners from lowering their tax rate by sprinkling money to family members regardless of their involvement in the business through dividends or by paying them salaries, and restricting the ability for private corporations to recover taxes through passive investments.

"We have been entirely consistent in our desire to help the middle class… including small businesses, while asking the wealthiest to do a little more to pay their fair share," Trudeau said Wednesday.

Trudeau also touched on many of the issues expected to dominate the House agenda when parliament resumes next week, including the government's plans to legalize marijuana by July 2018, and the ongoing NAFTA renegotiations which are set to come to Ottawa at the end of the month.

The House of Commons resumes Sept. 18, and the Senate resumes Sept. 19.