Bipartisan group will host first public panel on Tuesday with procurement leaders.
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Some of the biggest differences between the law and the proposed alternative deal with information-technology requirements.
Watchdog agency says moving too quickly on pay-for-performance systems undermines their credibility.
Acquisition reform negotiations also are on this week's agenda.
Senate is expected to consider the measure on Tuesday and the goal is to complete conference negotiations before the Memorial Day recess.
Emergency management veterans say placing the agency in the Homeland Security Department starved it of resources and decision-making power.
Plan would expand workforce and revise processes to keep programs on time and within budget.
With limited resources, procurement officials try to spend funds quickly and efficiently.
Oversight subcommittee is collecting data about the business practices of Alaskan firms for a July hearing.
DHS chief says the funding could be used to send extra troops to curb border violence.