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…