The order gives California, New Mexico and Washington-state a month to comply.
The United States Department of Transportation has threatened to withhold federal funding from three states unless they add English proficiency as a requirement for commercial truck drivers.
On Tuesday, the Transportation Department made the call to potentially withhold funding from the states of California, New Mexico and Washington.
The administration of President Donald Trump has taken a series of steps to address concerns about foreign truck drivers who do not speak English. Last week, Secretary of State Marco Rubio said the United States was immediately pausing the issuance of all worker visas for commercial truck drivers.
In April, Trump signed an executive order directing the enforcement of a rule requiring commercial drivers in the US to meet English proficiency standards.
