The head of the International Monetary Fund wants more money from the United States in case the European debt crisis gets worse.

Christine Lagarde say the IMF needs to have a cash reserve on hand if the world economy starts to turn down.

"We certainly need more resources," she said, without specifying an amount.

Lagarde cited the European crisis along with rising oil prices and high unemployment.

She said that Americans may think Europe's economy doesn't really matter to them. But she argued the if Europe's economy weakens, it could hurt the U.S. recovery and American jobs.

The IMF has about $400 billion in resources that it can use to provide loans to countries in trouble. Lagarde has talked about expanding those resources to close to $1 trillion.