Cummings, together with Connolly and the six other subcommittee ranking members, sent a letter to Issa on Friday objecting to this policy and its other provision, which states that the minority must designate witnesses within 24 hours of a hearing being announced.
"It is fundamentally absurd to demand that we identify minority witnesses before you have identified witnesses yourself, yet your new policy does just that," the letter states.
Republicans and Democrats on the committee have been at odds over many issues since the beginning of the 112th Congress.
Terri Henderson, 6, center, whose mother is El Salvador, attends a rally with members of Congress at Union Station's Columbus Circle to announce the Restore Opportunity, Strengthen, and Improve the Economy (ROSIE) Act on July 29, 2014. The legislation provides incentives for government contractors to pay a living wage and other benefits that would help low-income workers.