MEXICO CITY — Mexico’s Ministry of Foreign Affairs, apparently responding to promises by President-elect Donald J. Trump to step up deportations, announced a plan on Wednesday to provide more protection and support for Mexican immigrants in the United States and urged the Mexican population to “stay calm.”

In a statement and an accompanying video, both titled “We Are With You,” the ministry laid out an 11-point plan intended to help Mexicans in the United States get accurate information about possible changes in immigration policy and avoid falling victim to “abuse and fraud.”

“Fellow countrymen, these are moments of uncertainty,” Mexico’s foreign minister, Claudia Ruiz Massieu, said in the video. “Stay calm, do not fall to provocations and do not let yourself be deceived.” She added: “We want to inform you about possible migratory actions” that could take effect starting in February.

The ministry’s strategy promised an expansion of services offered by Mexico’s Embassy in Washington and its 50 consulates around the United States, including a 24-hour toll-free consular hotline to address migration concerns and report possible fraud; an increase in outreach efforts in neighborhoods with large Mexican populations; and more help for Mexican immigrants to secure identification documents for them and for their American-born children.