Regulatory Flexibility Improvements Act of 2003

[AI summary unavailable — showing source text] Regulatory Flexibility Improvements Act of 2003 - Revises the Regulatory Flexibility Act. Defines the "economic impact" of a rule to include any economic effects on small entities. Includes tribal organizations within the definition of "small governmental jurisdictions." Redefines a "small organization." Requires initial and final regulatory flexibility analyses: (1) to describe alternatives or steps taken, respectively, that maximize any significant beneficial economic impact on small entities; and (2) for revisions to land management plans, rules made on the record after opportunity for an agency hearing, and interpretive rules involving the internal revenue laws that impose a recordkeeping requirement. Requires initial analyses of a proposed rule to contain a detailed statement (1) of the reasons why a description of duplicative, overlapping, or conflicting Federal rules could not be provided; and (2) estimating the cumulative economic impact on small entities beyond that already imposed on the class of small entities by the agency or explaining why such an estimate is not available. Requires that final analyses include the agency's response to any …