Donald Trump’s chief economic adviser Larry Kudlow has suffered a heart attack, the president said.

“Our Great Larry Kudlow, who has been working so hard on trade and the economy, has just suffered a heart attack”, Mr Trump said on Twitter.

Mr Kudlow was receiving treatment at Walter Reed Medical Center in Bethesda, Maryland, Mr Trump said.

White House press secretary Sarah Huckabee Sanders subsequently told reporters that Mr Kudlow was “in good condition”, saying the heart attack was a mild one.

The timing of Mr Kudlow’s apparent medical emergency was notable for multiple reasons.

Over the weekend, Mr Kudlow amplified Mr Trump’s aggressive views on trade by saying Canadian prime minister Justin Trudeau had “stabbed America in the back” for pushing back on US trade demands after Mr Trump left a G-7 conference.

And Mr Trump wrote his message of support from Singapore, just minutes before he was expected to meet North Korean leader Kim Jong-un for a high-stakes and historically fraught summit.

These products may become more costly in the trade war Show all 9 1 /9 These products may become more costly in the trade war These products may become more costly in the trade war Orange Juice, which Florida is known for, may soon be subject to import tariffs Getty Images These products may become more costly in the trade war The EU lists 'footwear with outer soles of rubber or of plastics and uppers of plastics' amongst the goods that may soon be subject to import tariffs Getty Images These products may become more costly in the trade war Cosmetic products, such as US brands Maybelline, MAC and Avon, may soon be subject to import tariffs Getty Images for Rebekka Ruetz These products may become more costly in the trade war Jeans, the all-American trousers, are on the EU's list of goods that may be subject to import tariffs Getty Images These products may become more costly in the trade war Bourbon whiskey is on the EU's list of over 100 US products that may be subject to import tariffs Getty These products may become more costly in the trade war US peanut butter products are on the EU's list of goods that may soon be subject to tariffs Getty Images These products may become more costly in the trade war US motorcycles, such as the Harley-Davidson, may soon be subject to import tariffs Getty Images These products may become more costly in the trade war Cranberry products, a major US crop export, may soon become more expensive Getty Images These products may become more costly in the trade war All tobacco products are on the EU's list of US goods that may be subject to import tarifs AFP/Getty Images

Mr Kudlow became director of the National Economic Council in April, replacing Gary Cohn as the Trump administration swung towards a more protectionist trade strategy.

Acting on Mr Trump’s longstanding contention that other countries have taken advantage of America with one-sided trade deals, the administration has unveiled a series of tariffs intended to counteract what Mr Trump calls unfair trade imbalances.

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