What are tariffs and why is Donald Trump talking about them?

The President of the United States has announced he will raise taxes, called tariffs, on goods coming from Canada, Mexico and China into the US.

This means that it will be more expensive for people from those countries to do business in the United States (US).

President Trump has previously said he wants to raise tariffs in order to protect US jobs and industries.

He hopes that by increasing the price of products made abroad, it will encourage Americans to buy US-made goods instead.