WASHINGTON, Jan 31 (Reuters) - President Donald Trump

told reporters on Friday nothing can be done by Canada, Mexico

and China to forestall tariffs and vowed to tariff items such as

chips, oil and gas.

Trump added that tariffs on oil and gas are likely by Feb 18.

Earlier in the day, the White House said Trump on Saturday

will implement tariffs of 25% on Canadian and Mexican imports

and 10% on Chinese goods with immediate effect.

(Reporting by Trevor Hunnicutt and Nandita Bose in Washington)