Chapter 6 (§ 101 et seq.) of this title, referred to in subsec. (b), is a reference to act Mar. 23, 1932, ch. 90, 47 Stat. 70, popularly known as the Norris-LaGuardia Act.

In subsec. (c), “court of appeals” substituted for “circuit court of appeals” on authority of act June 25, 1948, as amended by act May 24, 1949. The words “United States” immediately preceding “Court of appeals” were inserted on authority of section 43 of Title 28, Judiciary and Judicial Procedure.

In subsec. (c), “section 1254 of title 28” substituted for “sections 239 and 240 of the Judicial Code, as amended (U.S.C. title 28, secs. 346 and 347)” on authority of act June 25, 1948, ch. 646, 62 Stat. 869, section 1 of which enacted Title 28, Judiciary and Judicial Procedure.