Expanding Opportunities for Main Street Act of 2010

[AI summary unavailable — showing source text] Expanding Opportunities for Main Street Act of 2010 - Requires a federal department or agency, to the extent practicable, to award to a small business each acquisition contract of more than $3,000 and less than $500,000 (eligible contract). Authorizes a federal department or agency to award an eligible contract to a small business if at least one small business submits a contract offer. Requires federal contracting officers to provide a determination of and reasons for not awarding an eligible contract to a small business. Amends the Small Business Act to allow an otherwise-qualifying individual with a net worth of less than $1.5 million to participate in the Minority Small Business and Capital Ownership Development Program of the Small Business Administration (SBA). Redefines the terms "bundled contracts" and "bundling of contract requirements" for purposes of small business participation in federal procurement contracts. Increases federal small business procurement contracting goals. Requires the withholding of specified contract amounts to contractors who fail to award a specified percentage of its subcontracts to small business concerns owned and controlled …