A Yemeni-American citizen killed himself in July after his family was denied visas under President Trump Donald John TrumpSteele Dossier sub-source was subject of FBI counterintelligence probe Pelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Trump 'no longer angry' at Romney because of Supreme Court stance MORE's travel ban, according to NBC News.

Though Mahmood Salem's three youngest children are U.S. citizens, his wife and oldest two are not and the U.S. government denied them visas under Trump's travel ban, which blocks immigration from seven countries, including Yemen.

Salem reportedly called his family, which was residing in Djibouti, on July 18 to say goodbye.

His brother, who lives in Michigan, said his family being barred from the country caused his brother to kill himself. ADVERTISEMENT

“I’ll say it’s the first and main reason. I could give it 90 percent,” he told NBC. “He cannot bring them here and at the same time, he cannot take them back to Yemen." The U.S.-backed war in Yemen has raged since 2015, and the ongoing violence has caused thousands of deaths, according to the Human Rights Watch.

The Trump administration's travel ban has been in place since December and the Supreme Court upheld it in June.

According to his relatives, Salem said during his final phone call that he didn’t have enough money to support them in Djibouti. Salem moved his family in 2016 to Djibouti, the location of the nearest U.S. Embassy, according to NBC.

Though his family received visa approvals in November, their visas were not processed before the travel ban went into effect. Their visas were ultimately denied.

“Missions abroad are constantly reviewing their procedures and practices to ensure visa adjudications are made consistent with the law,” a State Department official said in a statement to NBC.

The U.S. government issued waivers for Salem's family to travel to the U.S. a few days after his suicide, but they arrived too late for his funeral, according to NBC.

HuffPost and NBC reported that thousands of Yemeni immigrants have been separated from family members due to the travel ban, which targets seven predominantly Muslim nations.

The announcement of Trump's travel ban in 2017 prompted a wave of outrage and activism, with many claiming it amounted to discrimination against Muslims on the basis of religion.

Though the policy was challenged in multiple courts across the country, it was ultimately upheld with some adjustments.