Speaker of the House Mike Johnson was forced to walk back a claim he made after CNN’s Jake Tapper debunked it live on-air in real time after the Christian nationalist Republican of Louisiana tossed out several unsubstantiated “facts” about the southern border. Despite having recessed the House until next week, Johnson, along with dozens of Republicans, traveled to Texas Wednesday to see the southern border and ramp up their anti-Biden attacks while furthering their announced agenda to impeach the Secretary of Homeland Security. No cabinet secretary has been impeached in nearly 150 years. “Well…