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The US Federal Reserve has kept interest rates on hold despite pressure from President Donald Trump to announce a cut.

The central bank said borrowing costs will remain at between 2.25%-2.5%.

The Fed made the decision despite Mr Trump tweeting on Tuesday that it should reduce rates by 1% to help the US economy "go up like a rocket".

The Fed indicated earlier this year that it would not change rates for the rest of 2019.

In his latest attack on the Fed, Mr Trump criticised the central bank for "incessantly" raising rates.

He said that although growth is strong at 3.2% in the first quarter, if the Fed cut interest rates "with our wonderfully low inflation, we could be setting major records".

Commenting on whether comments such as these affect the Fed's decisions, chairman Jerome Powell said: "We are a non-political institution and that means we don't think about short-term political considerations, we don't discuss them and we don't consider them in making our decisions one way or the other."

In a statement explaining its decision, the Federal Open Market Committee (FOMC) maintained its "patient" approach to interest rates.

It said that economic activity rose at a "solid rate" but said that "growth of household spending and business fixed investment slowed in the first quarter".

It also noted that inflation is below the Fed's target of 2%.

Inflation growth slowed to 1.6% in the year to March compared with 1.7% in February,

Mr Powell said the FOMC had "good reasons" to think that lower inflation growth "may wind up being transient".

But he said: "We did see inflation running persistently below, then that's something the committee would be concerned about."

At present, Mr Powell said the Fed is "comfortable" with its current stance.

Analysis: Andrew Walker, economics correspondent:

If you wanted some clear guidance on the Fed's plans you must be disappointed.

Continued patience was what Jerome Powell had to offer. He did not see a strong case for moving interest rates in either direction. Risks to the economic outlook have moderated he said, referring particularly to international developments.

Data from Europe and China have improved, there have been signs of progress in US China trade talks and the possibility of a disorderly Brexit has been pushed off for now he said.

Less risk means less need to hold back from raising interest rates. But the Fed statement also noted that inflation is now running below 2%, the Fed's target. Last time, in March, the statement said price rises remained near that rate.

Lower inflation is a reason for holding off on rate rises and could support the case for cuts if the economy weakens.