Frosh's broad legal power: Partisanship or 'long overdue'?

Frosh joined a lawsuit challenging Trump's Muslim ban.

Frosh joined seven state attorneys general challenging the EPA for allowing the continued use of chlorpyrifos - a pesticide used on food crops - which has been found to impair brain function and development.

Filed by Frosh and District of Columbia Attorney General Karl Racine alleging that President Trump had violated the Constitution's emoluments clause, which prohibits the president from benefiting financially from foreign governments.

Frosh joined 10 state attorneys general alleging the Energy Department lacks energy efficiency standards for products like air conditioning units, power supplies and walk-in coolers.

Frosh joined a coalition of 13 states suing the EPA for not enforcing regulations on greenhouse gas emissions at oil and gas sites.

Frosh joined 14 state attorneys general and the city of Chicago in an intent to sue the EPA if it did not control methane emissions under the Clean Air Act.

Frosh joined 17 other states and Washington, D.C. in suing the Department of Education for not enforcing the borrower defense rule, which protects students who take out predatory loans at for-profit colleges and universities.

Frosh filed a lawsuit, along with 10 other state attorneys general, against the the EPA for delaying a rule meant to protect first responders in chemical accidents.

Frosh joined California, Maine and Minnesota in filing suit against the Trump administration for ending the Deferred Action for Childhood Arrivals immigration program. In August, a Texas judge ruled the program unconstitutional but allowed it to remain in place.

Frosh filed a complaint aganst the EPA for not acting to control air pollution from power plants in five neighboring states.

Frosh joined seven state attorneys general in a suit against the EPA after the Federal Highway Administration repealed the Green House Gas performance measure, which was required when building future roads.

Frosh joined a coalition of 17 states and Washington, D.C. in a suit against the Trump administration after it ended healthcare subsidy payments under the Affordable Care Act.

Frosh led a lawsuit -- along with 17 other states -- in suing the Education Department for not enforcing the gainful employment rule, which requires for-profit colleges to adequately prepare students for employment after graduation.

Frosh joined California, Delaware, New York and Virginia in a lawsuit against the Trump administration's rules denying contraception to women by giving employers control over providing those services.

Frosh joined a lawsuit with every Democratic attorney general in the nation to block the Federal Communications Commission from rolling back net neutrality.

Frosh joined 10 states in a lawsuit to prevent the EPA from reversing the "Clean Water Rule," which protects rivers, lakes and wetlands nationwide from pollution.

Frosh joined 19 state attorneys general in filing a suit against the Department of Commerce to block a question about citizenship being added to the 2020 census.

Frosh joined 17 states suing the EPA over the rollback of emission standards on some future car models.

With the support of Gov. Larry Hogan, Frosh filed a petition to the Federal Aviation Administration over altered flight patterns over residential areas in the Baltimore Metro area.

Frosh joined a lawsuit of 17 states and Washington, D.C. challenging the Trump administration's policy on separating immigrant families after they crossed the Southern border.

Frosh joined Connecticut, New Jersey and New York in suing the Treasury Department over portions of the 2017 federal tax cut that reduce state and local tax deductions.

Frosh joined a lawsuit against the State Department attempting to block the release of plan's for untraceable 3D guns that could be downloaded from the Internet. A federal judge issued a temporary restraining order to prevent the plans release the next day.

Frosh filed a lawsuit demanding the Trump administration declare that the Affordable Care Act is constitutional.