The Trump administration's sabre-rattling on the strong U.S. dollar will run afoul of real-world economics, said Roger Bridges, global rates and currencies strategist at Nikko Asset Management.
The dollar tumbled on Tuesday after Peter Navarro, the head of U.S. President Donald Trump's new National Trade Council, told the Financial Times that Germany was using a "grossly undervalued" euro to gain advantage over the U.S. and its own European Union partners.
That marked a continuation of efforts by Trump himself and other officials to jawbone the dollar lower.
In the wake of Trump's surprise election win, the dollar index, which measures the greenback against a basket of currencies that heavily weights the euro, climbed to a 14-year high.
The move was driven by Trump's campaign rhetoric advocating of tax cuts for individuals and companies as well as substantial infrastructure projects, which appeared set to boost the government's deficit spending. That would in turn drive U.S. interest rates higher, taking the dollar along for the ride.
And Bridges told CNBC's "Street Signs" on Wednesday that Trump's polices would work against efforts to weaken the greenback.
"What the Trump administration is trying to do is in fact roll back what economic theory would suggest," he said.
"With the American economy as it is and you try to do fiscal expansion, the effect of that in any model where you've got floating exchange rates and freedom of capital movement, is that your rates go up and your currency goes up," Bridges said. Nikko Asset Management had $176.5 billion in total assets under management as of the end of September.