US security forces have engaged with migrants at the country’s southern border with Mexico. US border patrol agents used tear gas to keep the group from approaching the crossing line. The recent deaths of two immigrant children in U-S custody have piled pressure on President Donald Trump for his tough immigration policies. The U-S president blamed the Democrats and QUOTE- their pathetic policies for the tragedy. Democrats, on the other hand, accuse Trump of demonizing migrants for political gain. The U-S government has been on a partial shutdown over a standoff between the White House and the Congress over funding for a border wall since December 22 last year.