US President Barack Obama's economic stimulus plan is generally supported by Americans but many argue over its details. A Gallup poll out Tuesday showed that a majority of Americans want Congress to either reject or make "major changes" to the economic stimulus package on Capitol Hill, and many are now looking for major revisions in the way the government is approaching the recession. The poll, conducted from Friday through Sunday, found that 75 percent of Americans want some version of the plan approved by Congress, but the survey reflected deepening doubts about the effectiveness of the programs and spending items currently being considered by federal lawmakers. Only 38 percent of those polled favored the existing stimulus proposal, down from a slight majority holding that view in the Jan. 28 Gallup survey. 37% said they want major changes in the plan and 17% reject the plan altogether.