In 13 days, Kyle Simmons, former chief of staff to Minority Leader Mitch McConnell, R-Ky., and currently a member of the FIRST Group--a Washington consulting firm he launched with three other former congressional aides--will be eligible to lobby his old colleagues.

In 11 days, Robert McCreary, former chief of staff to Rep. Doug Lamborn, R-Colo., and currently a registered lobbyist for NEK Advanced Security Group, will legally be able to lobby his former colleagues on behalf of his new employer.

In 10 days, Andy Weis, a former general counsel of the Senate Committee on Homeland Security and Governmental Affairs ...