The proposed regulation was created in response to a deadly derailment last year in Canada.
Thursday's edition of the Federal Register contains new rules for walk-in freezers, workplace health and safety investigations, sanctions on Syria, and broadcasters.
Obama unveiled executive actions, amid GOP accusations he is politicizing equal pay issue.
Wednesday's edition of the Federal Register contains new rules for TVs, tobacco, financial companies and classified information.
Obama to unveil two new measures on Tuesday.
The FDA and FTC shouldn't wait to rein in the fast-growing industry, lawmakers say.
A petition to the White House says the Army's rules for women are "racially based."
Tuesday's edition of the Federal Register contains new rules for commercial packaged boilers, composite wood products, military visas and endangered species.
Republicans look to continue theur assault on Obama's rulemaking policies in the last week before spring recess.
The president is poised to announce executive actions designed to close the wage gap.