Federal Reserve raised interest rates by 25 basis points for the second time in three months
The Fed has kept rates at low levels since the financial crisis to stimulate economic activity
The Fed is expected to continue tightening monetary policy this year
Raising the Fed Funds target rate to 0.75-1.00% marks second rate hike in just over three months
Market players believe the rate hike is likely to make the market nervous
The rate increase expected on March 15 will be the second in four months
Fed Chair Janet Yellen said any increased spending by the Trump administration could impact how the Fed adjusts rates going forward