http://www.arrl.org/news/amateur-radio-becomes-primary-on-1900-2000-khz-on-august-6

From the article appearing at the website link above:

07/07/2015

Amateur Radio will be upgraded on August 6 from secondary to primary in the 1900-2000 kHz segment of 160 meters in the US. That’s the effective date of the WRC-07 implementation Report and Order and WRC-12 Order portions of a lengthy FCC document released on April 27. Both portions appeared on July 7 in the Federal Register; the Notice of Proposed Rule Making (NPRM) of the same proceeding was published in the Federal Register on July 2. The FCC also made a secondary allocation of 135.7-137.8 kHz to the Amateur Service, but this band will not be available until service rules have been adopted.”

73,

N2TOB