abc's lynda lopez joins us with the latest. good morning, lynda. >> reporter: kendis and diane, justice kennedy's retirement setting the stage for an epic battle between democrats and republicans on his replacement and president trump beginning that battle at a campaign rally wednesday night. at a rally in north dakota for republican senate candidate kevin cramer, president trump wasting no time addressing the upcoming vacancy on the supreme court. >> justice kennedy's retirement makes the issue of senate control one of the vital issues of our time. >> reporter: the president making it clear he's aware his choice could reshape the court for decades to come. >> we have to pick one that's going to be there for 40 years, 45 years. >> reporter: justice anthony kennedy who was appointed by ronald reagan and served for six administrations often sided with conservatives but also wasn't afraid to side with liberals to be the deciding vote in landmark cases upholding affirmative action. on abortion, reaffirming roe v. wade and ruling for

lynda lopez, abc news, new york. >>> first lady melania trump is back to the border to visit a center. meanwhile we've learned homeland security will not be using an old air force base in concord to house detained my grant families. they need to find housing for 12,000 families. there are two bases in texas, but more facilities will be needed. a federal judge has ordered the trump administration to reunite migrant children with their parents within 30 days. >>> officials will be testing the first phase of a new freeway security network. chp, cal transand district attorney will be calibrating technology along highway 4. controlled, live fire exercises will be conducted between 9:00 p.m. tonight and 4:00 a.m. tomorrow. the second phase of the installation of the shotspotter will be completed next month. the final phase is the implementation of a full camera system in august. >>> san francisco is a step closer to hiring hundreds more police officers. according to "the examiner" the budget committee has approved $21 million for three police academy classes. the goal is to add 250 more off