WASHINGTON — President Donald Trump is reiterating his support for a plan that would curb legal immigration and shift the nation toward a system that would place an emphasis on merit and skills over family ties.

Trump says on Twitter that “CHAIN MIGRATION cannot be allowed to be part of any legislation on Immigration!”

The president last month embraced legislation backed by two Republican senators that would eliminate the preference for U.S. residents’ extended and adult family members while maintaining priority for their spouses and minor children.

The tweet comes as the president and congressional Democrats are working on a deal to preserve protections for hundreds of thousands of young immigrants living illegally in America.