Immigration is the focus for US President Donald Trump's meeting with some Republican senators as he pushes his overhaul plan. <br/><br/>Trump wants to shift from a family-based immigration system to one based on merit, as part of any deal to extend legal status for young immigrants who were brought to the US illegally as children.<br/>'<br/>Trump ended the Deferred Action for Childhood Arrivals program last year. He set a March deadline for Congress to act. White House spokesman, Hogan Gidley said, an updated approach to immigration should serve the needs of American workers, families and taxpayers. <br/><br/>