President Donald Trump has made it clear that he is concerned about the United States’ dependence on foreign countries for much of its copper and is looking to boost domestic mining of the metal, but his efforts are likely to feed inflation and take years to reap rewards.

President Trump signed an executive order this week that calls for boosting the domestic copper industry, which could eventually help two delayed Arizona mining projects.

American head of state Donald Trump has directed the US government to explore potential tariffs on copper imports, marking another significant move in his administration’s ongoing trade strategy. The executive order,