Joe Biden is expected to call European leaders Angela Merkel and Emmanuel Macron early on as he speaks with politicians across the world in the coming days.
Johnson is hoping to build bridges with Biden after a Democratic source claimed that there was “no special relationship with Boris Johnson” following the election win.
But sources close to Biden said that Johnson was unlikely to be at the “top of the list” for his first call, with British diplomats expecting the German chancellor and French president to rank highly.
According to the Daily Mail, one source said: “Look, we’re probably not top of the list for the first phone call.
“Are some people in government fretting about that? Yes, but you can read too much into it.
“If we find ourselves being called after Papua New Guinea then we should probably start to worry.”
Biden is likely to prioritise a deal between America and the EU over a post-Brexit deal with the UK.