Rep. Nancy Mace Immigration Bill: Third World Immigration Moratorium Act

On July 15, 2026, Rep. Nancy Mace (R-SC) introduced the Third World Immigration Moratorium Act. The bill would bar entry to the United States for individuals from 39 countries across the Caribbean, Middle East, and Africa, as well as those traveling on Palestinian Authority-issued documents. The legislation mirrors the list of countries currently under full or partial travel bans by the Trump administration.

Mace's office framed the bill as a direct response to what she described as a failure of many immigrants from these nations to assimilate into American life. In a statement, Mace said: "For too long, Washington has looked the other way while bad actors exploited every gap in our system and American families paid the price. Those days are over." She added: "If you import the third world, you will become the third world."

The bill's title and language are deliberately provocative. Mace's office stated the policy is "in direct alignment with President Trump's Proclamation and orders on foreign policy." The list of affected countries includes Afghanistan, Angola, Antigua and Barbuda, Benin, Burkina Faso, Burma, Burundi, Chad, Cote d'Ivoire, Cuba, Dominica, Equatorial Guinea, Eritrea, Gabon, Gambia, Haiti, Iran, Laos, Libya, Malawi, Mali, Mauritania, Niger, Nigeria, Republic of the Congo, Senegal, Sierra Leone, Somalia, South Sudan, Sudan, Syria, Tanzania, Togo, Tonga, Turkmenistan, Venezuela, Yemen, Zambia, Zimbabwe, and aliens with travel documents issued by the Palestinian Authority.

Exceptions and Scope

The bill includes several exceptions: lawful permanent residents, dual nationals from non-designated countries, diplomatic and NATO treaty personnel, and athletes competing in the World Cup or Olympics. These carve-outs suggest the bill is not a blanket ban but a targeted restriction aimed at specific populations Mace argues have not cooperated with U.S. immigration and deportation services.

Mace's office reports having resolved over 12,000 constituent cases and returned $40 million to constituents, figures she uses to bolster her claim of effective representation. She sits on the House Armed Services, Veterans' Affairs, and Oversight committees, and chairs the Cybersecurity Subcommittee on Oversight.

Political Implications

The bill arrives at a moment when immigration policy remains a central political battleground. Mace's legislation seeks to codify Trump-era travel restrictions into permanent law, a move that would make them harder to reverse by a future administration. The bill's title — explicitly using the term "third world" — signals an unapologetic approach that could energize the Republican base while drawing sharp criticism from immigrant advocacy groups and some Democrats.

The political calculus is straightforward: Mace is betting that the American public supports stricter immigration controls, particularly from countries she characterizes as non-cooperative. The bill's exceptions for lawful permanent residents and dual nationals may blunt some criticism, but the sweeping nature of the ban — covering 39 countries plus Palestinian Authority document holders — ensures it will face significant debate.

For context, the broader immigration landscape includes other recent developments, such as the Florida immigration incident involving a man killed while fleeing ICE, which has intensified scrutiny of enforcement practices. Meanwhile, Senator Katie Britt's stance on Russia sanctions shows how foreign policy and immigration are increasingly intertwined in congressional debates.

Potential Impact on U.S. Immigration Policy

If passed, the Third World Immigration Moratorium Act would represent a significant hardening of U.S. immigration policy. It would effectively make permanent the travel restrictions that have been implemented through executive orders, removing the possibility of a future president reversing them without congressional action. The bill's focus on countries in Africa, the Caribbean, and the Middle East would disproportionately affect immigrants from those regions, potentially altering the demographic composition of legal immigration.

The bill also raises questions about U.S. foreign relations. Many of the affected countries are U.S. allies or have strategic importance. For example, Nigeria is a key partner in West Africa, and Cuba and Venezuela are neighbors with complex diplomatic ties. Restricting travel from these nations could strain bilateral relationships and complicate cooperation on issues like trade, security, and counterterrorism.

Legal challenges are almost certain. The Trump administration's previous travel bans faced multiple court battles, though some were ultimately upheld by the Supreme Court. Mace's bill, if enacted, would likely trigger similar litigation, with opponents arguing it discriminates on the basis of nationality or religion. The bill's explicit reference to "third world" countries could be used as evidence of discriminatory intent, though supporters would argue it is a factual description of economic development levels.

Broader Context

The bill is part of a broader push by Republican lawmakers to tighten immigration controls. Mace's legislation aligns with President Trump's executive orders and reflects a party base that views immigration as a top concern. The timing — mid-2026, with midterm elections approaching — suggests the bill is also a political statement designed to rally supporters and define the party's stance heading into the campaign season.

Immigration policy has become increasingly polarized, with each side viewing the other's proposals as extreme. Mace's bill, with its blunt language and sweeping scope, is unlikely to bridge that divide. Instead, it will likely serve as a rallying cry for those who favor strict enforcement and a target for those who advocate for more open immigration policies.

The bill's future in Congress is uncertain. It faces opposition from Democrats and some moderate Republicans who may be uncomfortable with its language or scope. However, in a political environment where immigration is a defining issue, Mace's proposal ensures that the debate over who gets to enter the United States — and under what conditions — will continue to dominate the legislative agenda.

For those tracking the intersection of technology and policy, the bill's implications extend to visa processing, border security technology, and data-sharing agreements with affected countries. The Hong Kong tech scene's growth amid regulation shows how immigration policies can shape talent flows and innovation ecosystems. Similarly, the bill's restrictions could affect tech companies that rely on global talent from affected regions.

As the legislative process unfolds, the Third World Immigration Moratorium Act will test whether Congress can codify executive branch travel restrictions into permanent law — and what that means for the future of U.S. immigration policy.