AFP, Los Angeles :Texas led a group of 17 US states Wednesday in suing President Barack Obama’s administration over its plan to offer up to five million undocumented migrants protection from deportation.Texas Attorney General Greg Abbott said Obama’s unilateral immigration reform plans, unveiled last month to bypass Congressional gridlock by Republicans, “tramples” on the US constitution.”The president is abdicating his responsibility to faithfully enforce laws that were duly enacted by Congress and attempting to rewrite immigration laws, which he has no authority to do,” Abbott, who filed the lawsuit, said in a statement.He said Obama’s move “tramples the US Constitution’s Take Care Clause,” which limits the president’s power and ensures he will faithfully execute Congress’s laws-“not rewrite them under the guise of ‘prosecutorial discretion.'”