The White House is working on adding more room to house young immigrants who cross the southern border, after a group of senior officials traveled to the border to speak to staffers and children and see the worsening situation firsthand. Homeland Security Secretary Alejandro Mayorkas and a slew of other Biden administration officials, such as domestic policy adviser Susan Rice, went to southern Texas and toured a Customs and Border Protection facility, along with the newly reopened Carrizo Springs holding facility. No reporters were allowed to accompany the group. Following the visit, the group plans on briefing President Joe Biden about what they learned, though they hadn’t done so as of Monday. That briefing will include advice on how to increase capacity for the rapidly increasing number of child immigrants arriving at the border. “We know just purely by the number, that there is going to be a need. Right? …