WASHINGTON — The White House is embarking on a major campaign to turn public opinion against the nation’s largely family-based immigration system ahead of an all-out push next year to move toward a more merit-based structure.

The administration was laying the groundwork for such a drive even before an Islamic State-inspired extremist who was born in Bangladesh tried to blow himself up in Midtown Manhattan on Monday. It is assembling data to bolster the argument that the current legal immigration system is not only ill-conceived, but dangerous and damaging to U.S. workers.

“We believe that data drives policy, and this data will help drive votes for comprehensive immigration reform in Congress,” said White House spokesman Hogan Gidley.

White House officials outlined their strategy this week exclusively to The Associated Press, and said the data demonstrates that changes are needed immediately. But their effort will play out in a difficult political climate, as even Republicans in Congress are leery of engaging in a major immigration debate ahead of the 2018 midterm elections.

The issue is expected to be prominently featured in the president’s Jan. 30 State of the Union address. The White House also plans other statements by the president, appearances by Cabinet officials and a push to stress the issue in conservative media.

The administration was beginning its campaign Thursday with a blog post stressing key numbers: Department of Homeland Security data that shows nearly 9.3 million of the roughly 13 million total immigrants to the U.S. from 2005 to 2016 were following family members already in the United States. And just one in 15 immigrants admitted in the last decade by green card entered the country because of their skills.

Other planned releases: a report highlighting the number of immigrants in U.S. jails, assessments of the immigration court backlog and delays in processing asylum cases, and a paper on what the administration says is a nexus between immigration and terrorism.

Critics have questioned the administration’s selective use of numbers.