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The US is delaying a deal to remove Trump-era tariffs on UK steel and aluminium because Washington is concerned about London’s threats to change post-Brexit trading rules in Northern Ireland.
Brussels and Washington have repeatedly warned London that unilaterally changing the EU-UK accord that sealed Britain’s exit from the bloc in 2020 could threaten peace on the island of Ireland.
In a communication seen by the Financial Times, a US commerce department official stated that talks on easing metals tariffs could not move ahead because of US concerns at British threats to trigger Article 16, a safeguard clause in the post-Brexit Northern Ireland protocol.
The clause overrides part of the UK’s exit with the EU and would suspend…