WASHINGTON (Reuters) – The White House may soon propose the biggest change in US food aid since the programmes were created during the Cold War – donating cash for hunger relief instead of shipping American-grown food thousands of miles to global trouble spots, say farm groups and charities. Reformers have argued for years that cash donations, the method used by most nations, are more efficient and speedier. But food donation has been the favoured US approach since the Food for Peace programme was enacted in 1954. Groups on both sides of the issue said yesterday that the Obama administration, when it unveils its budget for the fiscal year opening October 1, may endorse cash donations and propose fewer food donations.