NEW YORK - A supersized World Cup tournament and its dizzying array of feel-good social media fodder gave the US image a much-needed boost globally, though concerns over high-level interference and visa difficulties for some fans overshadowed the action on the field at times as the lines between politics and sport blurred.

An annual study of democracy in May showed that global perceptions of the United States under the Trump administration had fallen below those of Russia.

A crackdown on immigration, sweeping tariffs and the US and Israeli war on Iran damaged America’s standing in the eyes of the world.

But while US President Donald Trump’s approval rating at home was at the lowest of his second term early in the tournament, a series of viral social media moments may have softened the world’s perspective on Americans - at least temporarily.

The Tartan Army Scottish fan base’s love affair with Boston provided one of the tournament’s feel-good storylines, as did Algeria’s unlikely friendship with Lawrence, Kansas, where they held their training base camp.

And Americans themselves had their eyes opened to football’s global roar, delivering blockbuster television ratings while packing fan festivals. Fox Sports broke its World Cup records with an average of 5 million American viewers per group-stage match, up 92 per cent from the Qatar World Cup four years ago.

“Clearly, soccer struck an emotional chord in the United States and engaged millions of people who weren’t previously big soccer fans,” Leigh Steinberg, the agent attorney for the US football team the last time t...