Foreign governments are working hard to shape the debate on immigration reform as momentum for a comprehensive bill builds in Congress.

While the issue routinely comes up in talks between foreign leaders and the executive branch, embassy officials are ramping up their outreach to Congress and the White House in order to take advantage of the best hope for reform in years.

A number of countries with significant immigration ties to the United States — notably Mexico, Ireland and several Central American nations — have been making their concerns known while doing their best to avoid meddling in domestic affairs.