Warsh's credibility is on the line this week as Trump policies put pressure on Fed to hike

Before President Donald Trump reels off angry Truth Social posts if the Federal Reserve hikes rates this week, he should look in the mirror: His policies are a big reason the central bank has to consider a rate increase.

In March, one month after the beginning of the Iran war, with oil near $100 a barrel, the average Fed official was still forecasting a rate cut this year and another one next year.

It was a sign of the Fed's continued willingness to "look through" policies of the Trump administration that resulted in higher prices and to treat them as "one-offs."

Six months later, the Fed stands on the verge of what markets expect to be the first rate hike since 2023. And futures markets predict this is will not be a one-off increase. At least three hikes are priced in through March of next year.

It's a stark turnaround, but not one based on bad forecasting.

No president has publicly harangued and harassed the Fed more to lower interest rates. So it's ironic that a direct line can be drawn from Trump's policies to what looks like an inevitable rate increase Wednesday by the Fed, likely to be spearheaded by his handpicked Fed chairman, Kevin Warsh .

Two aspects of the president's policies look to be forcing the hand of the Fed. First, the policies themselves. Tariffs and the Iran war have both resulted in sharp changes to the inflation outlook. But, second, and potentially more consequential, may be the inability to judge the trajectory of policy. The Iran war, six months on, looks to have no end in sight. The situation has clearly worsened with the temporary shutdown of the Saudi East-West pipeline. Fed officials need to consider that oil prices won't be falling quickly.

The president himself no longer responds to crude price increases with a proclamation of an imminent deal with Iran. The surge in diesel prices to $6 a gallon threatens to push inflation deeper into the economy, such as food and transportation costs. The president said on Monday that diesel prices have risen more because of the war in Ukraine than the war in Iran.