“Frosh joins suit on census” was the headline for the main story in today’s Baltimore Sun.

It prompted me to write this letter to the editor.

Dear Editors:

It is the judiciary’s duty to “say what the law is,” declared Chief Justice Marshall in 1803.

The lawsuits brought by Attorney General Brian Frosh in response to the questionable actions of the Trump Administration further that bedrock principle.

My colleague Delegate Kathy Szeliga, the minority whip, believes that these cases are “wasting taxpayer money on petty partisan politics.”

The record demonstrates otherwise.

More than forty attorneys general have the legal authority to sue the federal government without the approval of their governor.

Under the law that the General Assembly enacted last year, when Mr. Frosh believes that “the federal government’s action or inaction…threatens the public interest and welfare” of the state’s residents, he must seek Governor Hogan’s input before going to court.

When Obamacare was challenged in 2010, 26 attorneys general filed a brief opposing the law.

When Scott Pruitt was the Oklahoma Attorney General, he frequently sued the Environmental Protection Agency, which he now heads.

Among the cases that Attorney General Frosh has brought are legal challenges to the Muslim travel ban; a Presidential decision on the Affordable Cate Act that would skyrocket health insurance premiums in the private market; and actions harmful to the Chesapeake Bay and climate change.

Judge Peter Messitte has cleared the way to proceed on the suit asserting that President Trump has unconstitutionally profited from his business dealings.

Before AG Frosh took these actions, he did not examine the poll numbers, he researched the law.