House Republicans will call up legislation in September to fight President Obama's decision to pay Iran $400 million in cash just moments before Iran released four U.S. hostages in January.

The Obama administration has said the payment was made to settle a separate dispute over money the U.S. owed Iran for a failed agreement under which Iran was to buy U.S. military equipment. But the timing of the payment, and later admissions that the payment was used as "leverage" to ensure the release of the hostages, left Republicans fuming that Obama orchestrated a ransom payment in violation of U.S. policy.

House Majority Leader Kevin McCarthy didn't say what bill will be called up to protest the payment, but he indicated there would be some legislative response once lawmakers return to work next week.

The bill has not been finalized, a GOP aide told the Washington Examiner.

"The administration's actions put American lives in jeopardy," House Foreign Affairs Committee Chairman Ed Royce, R-Calif., said in a statement provided to the Examiner. "That's why the committee is working on legislation that would prevent another ransom payment from happening. No more hidden cash payments to this state sponsor of terrorism."

McCarthy told lawmakers to expect "a number of measures related to anti-terrorism and Iran." He also said the House would vote on a separate bill, the Iranian Leadership Asset Transparency Act, which would require reporting on the financial assets acquired by Iranian leaders.

McCarthy also outlined other plans by the House next month, the last month they will be in office before they return to their 2016 campaign efforts.

Those plans include a short-term spending bill, to keep the government open past the end of the fiscal year on Sept. 30, and efforts to pass a $1.1 billion bill to fight the Zika virus, which has stalled in the Senate due to Democratic opposition.

Republican leaders are also eager to promote their "Better Way" agenda released by GOP lawmakers earlier this year, and will take up a series of bills developed from it, McCarthy said. Those include bills to curb federal over-regulation that the GOP believes the Obama administration has pushed over the protests of a Republican-led Congress.

"While House Republicans developed this bold agenda as a blueprint for 2017 and beyond, I believe we can and should make a down payment immediately, particularly in the areas of restoring Constitutional authority and regulatory reform," McCarthy said.

One bill set for a vote this month would ban all major administrative rule-makings that costs more than $1 billion until litigation against the rule is settled.

Another bill would authorize Congress to disapprove unacceptable "midnight regulations" issued in a president's lame duck term, according to McCarthy's memo.

The House will also vote on a series of bills that would encourage innovation and make it easier for small businesses to grow, including bills that would give some small businesses more freedom from Securities and Exchange Commission oversight and more flexibility for raising funds.

McCarthy said lawmakers may also vote on a bill that would eliminate the medical device tax in Obamacare and could consider final passage of a major defense policy bill that House and Senate lawmakers are set to begin negotiating.