The Supreme Court is set to hear a significant case that could reshape the ability of immigrants to appeal decisions made by immigration officials and become a boon for former President Donald Trump‘s agenda to deport illegal immigrants, should he win in November.

The nine justices will hear oral arguments on Tuesday in a case involving whether federal courts can review an immigration agency’s decision to revoke a visa petition. The final decision could have wide-reaching implications and make it more difficult for immigrants to contest decisions about their ability to remain in the United States as Trump campaigns for the presidency on a promise to initiate mass deportations if reelected.