Texas has found another ally in its mission to secure its borders from a now years-long invasion of illegal immigrants: Robert F. Kennedy Jr. As the crisis at the nation’s southern border entered its fourth year this month, officials in the Lone Star State took matters into their own hands by erecting barriers on its border with Mexico. The barriers included razor wire that is intended to dissuade people who have no legal right to enter the country from simply walking in. On Wednesday, Republican Texas Gov. Greg Abbott released a letter that made it clear the state has every right to protect i…