President Trump's administration will review the Dodd-Frank financial reform law in stages, according to a Monday Reuters report, and will likely miss the president's self-set June deadline for review completion.

Trump promised on the campaign trail to do a "big number" on the 2010 law that regulates Wall Street banks, which led to new consumer protections, higher capital requirements for banks and limits to a bank’s ability to make hedge speculative bets.

The president said in February that Treasury Secretary Steven Mnuchin would review the law and report his findings within 120 days. That review, originally slated to be complete sometime in June, is likely to lead to large aspects of the law being cut.

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But because of the many unfilled positions at the Treasury Department, the review will now come in batches, sources told Reuters.

Treasury will first focus on reviewing banking regulations such as capital requirements and limitations on speculative trading and leverage.

Examinations on capital markets, insurance and asset management industries, clearing houses, and more will be reviewed later on, Reuters added.

Conducting the examination piecemeal could affect certain sectors if their review is delayed, the outlet added, and a final report could take months.

A representative from Treasury did not immediately respond to Reuter’s request for comment.

Last month, the president signed two executive orders directing a separate review of two other Dodd-Frank regulatory powers. Those reviews are not expected to be complete until October.