Fundamental disconnect:
Liberals look to "advance" society's desirable ends through government action; Conservatives believe people and free markets advance THEIR OWN desirable ends through personal initiative IN SPITE of government. Therefore, it is not appropriate to ask, (a) What have Libs accomplished through government action vs. (b) what have Cons accomplished through government action. Cons DON'T WANT to accomplish things through government intervention; we want to prevent Government from impinging further and further into our human possibilities through higher taxes, fees, and government mandates. Therefore, it is a conservative ACCOMPLISHMENT when some disaster of a new law or regulation is PREVENTED from coming into force. For example, when Conservatives and the American People killed Hillary-care in the early 90's.
Liberals have been whining about the "inadequate, outdated" Federal Minimum Wage for decades, and yet when they had the chance to increase it (during Barry's first two years) it didn't even come up for discussion. So how important is that, really, to Dems/Libs? Not very. (Or maybe the realize that a significant increase would be a disaster, so they just pretend to want to increase it).
Libs declared a WAR ON POVERTY 40 years ago, and yet poverty is no less present now (worse, by some accounts) after the expenditures of hundreds of billions of Tax dollars in the so-called "war."
Libs have been campaigning for more and more money to be spent on public education - presumably to improve the quality thereof - and have succeeded beyond their wildest dreams in terms of Dollars/Student, and yet actual student achievement is in the toilet, largely due to the efforts of Teachers' unions, which are a principal supporter of the Democrat party.
Libs, acting through both legislation and the courts (dominated by pinko federal judges) have fought bigotry and racism through a number of illogical, unconstitutional initiatives, and yet the presumed victims of bigotry and racism claim (against all data, logic, and visible evidence) that racism and bigotry are at an all time high.
Liberals claim to be responsible for all environmental progress in this country, acting mainly through unconstitutional regulatory excesses, and yet the financial and economic costs of this progress have far outweighed the benefits, considering the huge army of bureaucrats, inspectors and regulators who are on perpetual public payrolls in the quest for "clean air, water, and land."
Even in the areas where liberal initiatives can arguably claim to be beneficial (e.g., Social Security, Obama-care), closer examination reveals costs that outweigh the benefits, coupled with lies that conceal the results and detriments of these policies. For example, if today's Boomers had been able to invest the approximately 13% of their pay during their entire working lives, instead of having it taken by Social Security, they would have mountainous retirement savings, and WOULD BE ABLE TO PASS IT ON TO THEIR HEIRS when they die, which is nothing but a cruel joke for people who now die before collecting or early into retirement. And the bills for Obama-care are JUST NOW COMING DUE, and millions upon millions of Americans will find their insurance premiums going up by 50% and more in 2016.