Will US Fed scale back help as American economy improves?
19 June 2013 Last updated at 10:04 BST
The American economy is showing signs that things are getting better - housing is rebounding and the job market is getting stronger.
Given the improvements, investors want to know when the US Federal Reserve will begin scaling back its help for the economy - that is, buying $85bn dollars a month in bonds and keeping interest rates low.
Samira Hussain reports.