President Donald Trump's tariff policy has undergone several developments since 'Liberation Day'.
The most recent of the changes saw confusion reign about how the US would treat imports of consumer electronics like smartphones.
It came after Mr Trump announced a 90-day pause on so-called "reciprocal tariffs", reducing the higher-rate tariffs to 10 per cent for every trading partner but China.
Here's how the US's tariff policy evolved over the last four days.
Some consumer electronics exempted
On Friday, the Trump administration walked back the tariffs that would have otherwise been imposed on electronics imported into the US, signalling some relief from trade wars that have particularly escalated with China.
A notice issued by the US Customs and Border Protection office listed more than 20 consumer electronic product categories that would be exempted from tariffs.
Some of those included:
Computers
Laptops
Disc drives
Smartphones
Memory cards
Semiconductors (chips)
Modems
Routers
This meant they would not be subject to the tariff on Chinese imports of 145 per cent.
The action also exempted the specified electronics from Mr Trump's 10 per cent "baseline" tariffs on goods from most countries other than China, easing import costs for semiconductors from Taiwan and Apple iPhones produced in India.
The exemptions were backdated to April 5, when the "Liberation Day" tariffs had taken effect.
The White House suggested the exemptions had been granted ensure companies had more time to move production to the US — however Mr Trump's own statements would soon raise questions about how long they would be in place.
"President Trump has made it clear America cannot rely on China to manufacture critical technologies such as semiconductors, chips, smartphones, and laptops," White House press secretary Karoline Leavitt said at the time.
Exemptions appear to be short-lived
Days after exempting the consumer electronics categories from tariffs, the Trump administration changed tune, announcing this would not be the case.
When are the chip tariffs set to start?
We don't know the exact timing yet.
Aboard Air Force One, Mr Trump said the "tariffs will be in place in the not too distant future".
Asked what the rate for semiconductors would be, he said: "I'm going to be announcing it over the next week", adding that there would be flexibility for some companies.
Will smartphones cost more because of the tariffs?
Economists have warned that tariffs impacting consumer technology could mean higher prices for smartphones, computers and other gadgets.
Analysts at investment bank UBS warned that the price of a China-made iPhone 16 Pro Max (256Gb storage) could rise by 79 per cent from $1,199 to about $2,150.
This figure is based on a total tariff of 145 per cent like the one imposed on Chinese imports that have not been exempted.