US Customs and Border Protection (CBP) officers briefly halt traffic on the Paso del Norte International Bridge between Ciudad Juarez and El Paso as they carry out a training exercise. US President Donald Trump ordered 1,500 more military personnel to the border with Mexico as part of a flurry of steps to tackle immigration, says his spokeswoman. Border security is a key priority for the president, who declared a national emergency at the US frontier with Mexico on his first day in office, and the additional personnel will bring the total number of active-duty troops deployed there to around 4,000. IMAGES