By John Kruzel and Ted Hesson WASHINGTON (Reuters) -Texas this week erected new barriers along part of the state’s border with Mexico, blocking Border Patrol access, a court filing said on Friday, as conflict over migration escalates between the state’s Republican governor and Democratic U.S. President Joe Biden. The Texas National Guard added new concertina wire and fencing to a stretch of the border near Eagle Pass, blocking U.S. Border Patrol access to a city park that contains a boat ramp agents use to reach the Rio Grande, the U.S. Department of Justice (DOJ) said in a filing to the U.S. …