Once seen as the bedrock of the global financial system, America has transformed into an unreliable economic partner under Donald Trump's erratic White House administration. And that comes at a cost, as we saw earlier this week when investors dumped US debt over fears that the president's trade war would trigger a financial crisis. This shows that the "premium on US treasuries remains high", says Garvey, referring to the extra interest investors demand in return for taking the risk to lend over time.