American Rare Earths’ (ASX:ARR) announcement on Tuesday was the second-most watched by HotCopper users ahead of trade – and the second announcement on the ASX to involve the USA’s export-import bank (EXIM.) On Tuesday, EXIM issued American Rare Earths a non-binding Letter of Interest (LOI) to the tune of US$456M (A$667M) – in other words, a sign the bank is taking a meaningful look at ARR’s project. That project is its Halleck Creek rare earth element (REE) play in Wyoming, “The Cowboy State” – where drilling kicked off back in July and where ARR recently transferred the project to a US subsid…