What texas pilitics did barbara jordan began serving in 1973

In 1972, she was elected to the U.S. House of Representatives, the first woman in her own right to represent Texas in the House. She received extensive support from former President Lyndon B. Johnson, who helped her secure a position on the House Judiciary Committee. In 1974, she made an influential televised speech before the House Judiciary Committee supporting the impeachment of President Richard Nixon, Johnson's successor as President. In 1975, she was appointed by Carl Albert, then Speaker of the United States House of Representatives, to the Democratic Steering and Policy Committee. (She didn't really do anything in 1973 but here is all I know from the 70's)
 

Clean air provides nitrogen