A new study published in the Journal of Health Economics finds that the president’s travel restrictions could hit about 50 million Americans, many of whom would be people who had been previously exempt from the president.

The researchers found that while a 10 percent increase in the total number of people exempt from travel bans could be justified by “an increase in mortality,” the increase in total population could not be justified under the new criteria.

The study found that if a 10% increase in travel restrictions was justified by an increase in death rates, it could be explained by an increased number of deaths and an increase of the population of those who died.

But if the number of new people were reduced by 1.3 million people per year, the researchers found a 5% increase of deaths could be offset by a reduction of 5 million deaths.

The authors conclude that the travel ban would not be “proportionally effective” in reducing the number and number of fatalities, because it would lead to an increase and decrease in the number in each of the other two groups.

The study did not find evidence that reducing travel restrictions by 5 million would lead a reduction in the size of the state’s population.

The new study is one of several recently published studies on the effects of President Donald Trump’s executive order restricting entry into the U.S. from seven predominantly Muslim countries.

The order was signed in March and temporarily suspended entry from seven countries: Iran, Iraq, Libya, Somalia, Sudan, Syria and Yemen.

The executive order had been criticized by groups representing U.K. citizens, as well as by people who work with refugees from the seven countries, and also by a group of international lawyers.