Former President Donald Trump recently telegraphed how he’ll come at President Joe Biden in next week’s presidential debate. Now, Biden’s advisors are refining the president’s counter-attack. In his latest column for the New Republic, writer Greg Sargent Biden delved into how Biden’s campaign team is preparing the president to respond to likely attacks from his Republican opponent focused on immigration. On his Truth Social platform, Trump strongly hinted that he’ll be attempting to pin isolated incidents of undocumented immigrants committing violent crimes on Biden. “We have a new Biden Migra…