President Obama said earlier this week the US lacked a "complete strategy" for helping Iraq regain territory from IS.
IS has recently made gains in Iraq despite US-led coalition air strikes.
In May the militants seized Ramadi, the capital of Anbar, Iraq`s largest province, as well as the Syrian town of Tadmur and the neighbouring ancient ruins of Palmyra.
IS fighters took control of Iraq`s second city Mosul a year ago this week.
Washington`s National Security Council said it was now "considering a range of options to accelerate the training and equipping of Iraqi security forces".
"Those options include sending additional trainers," spokesman Alistair Baskey said.
General Martin Dempsey, chairman of the Joint Chiefs of Staff, told journalists on a visit to Jerusalem that there would be no fundamental change to Mr Obama`s military strategy in Iraq.
But, he added, the service chiefs had "made some recommendations on potential enhancements to the training and equip mission".
The plan follows months of behind-the-scenes debate within the White House on how to retake Mosul and Ramadi, the New York Times reports.
US officials believe a major factor in the fall of Ramadi was a lack of training of Iraqi forces.
There are currently around 3,000 US military personnel, including trainers and advisers, in Iraq.
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