New England's bucolic countryside looks much the same on either side of the Connecticut River separating Vermont from New Hampshire.
But Medicaid beneficiaries are far better off in Vermont.
Vermont generously funds its Medicaid program. It provides better benefits, such as dental care, and pays doctors more than New Hampshire's program does. That brings more doctors into the program, giving enrollees more access to care.
New Hampshire has twice Vermont's population, but Vermont spends almost as much on Medicaid and covers more enrollees. Under the complicated formulas that set federal funding, Vermont's substantial investment helps it capture nearly as much aid from the government as New Hampshire gets.
States' policies differ about who or what to cover in Medicaid, and those decisions have led to historical variances in how much federal money they receive. House Republicans' effort to shrink federal Medicaid spending would lock in the differences in a way that favors those already spending high amounts per enrollee.
Related: Trump administration open to making some Medicaid recipients work, pay premiums
"Republicans are finding out why changing Medicaid is so hard and why the easiest thing to do is to do nothing given the substantial variation in federal spending across states," said John Holahan, a health policy expert with the nonpartisan Urban Institute.
Here's why.
Medicaid, the national health program for low-income people that covers about 1 in 5 Americans, is 60% funded by the federal government and 40% by states. Total spending in 2015 was about $532 billion, according to the latest official data.
Federal funding is open-ended, which means the government guarantees states it will pay a fixed rate of their Medicaid expenses as spending rises.
Those matching rates are tied to average personal incomes and favor the lowest-income states. Mississippi has the highest Federal Matching Assistance Percentage -- 76% -- while 14 wealthy states, including New York and California, get the minimum 50% from the federal government.
But state Medicaid spending varies significantly, too, and that influences how much federal money each receives to fund its program. State policies about how generous benefits should be and how much to pay doctors and hospitals account for those differences.
Related: 5 ways the GOP health bill could change your health
GOP leaders want to give states a set amount of money each year based on the number of Medicaid enrollees they had in 2016, a formula known as per-capita caps.
A per-capita system would benefit high-spending states already receiving relatively rich allotments from the government, the Urban Institute said in a paper last September.
According to its estimates, if the system were in effect this year, Vermont would receive $6,067 per enrollee — one of the highest allotments in the country — while New Hampshire would get the least, just $3,084 per enrollee.
Per-capita caps would limit the government's Medicaid spending because it would no longer be on the hook to help cover states' rising costs. But caps also would shift costs and financial risks to the states and could force them to cut benefits or eligibility to manage their budgets.
"It would present a huge problem," said Adam Fox, a spokesman for the Colorado Consumer Health Initiative, an advocacy group.
Under the GOP bill, federal Medicaid funding to states would be adjusted annually based on a state's enrollment and medical inflation. But that would not be enough to keep up with rising Medicaid spending per enrollee, which would force states to put up more of their money or scale back the program, the nonpartisan Congressional Budget Office said Monday.
Other analyses of the GOP plan have reached the same conclusion.
Since 1999, however, the average annual growth rate in Medicaid spending per enrollee has risen more slowly than medical inflation, according to MACPAC, the Medicaid and CHIP Payment and Access Commission, which advises Congress.
Related: Montana may be a model for the Medicaid work requirement
Republicans argue that overhauling federal Medicaid spending as they propose would hold down federal costs while giving states more leeway to run their programs as they see fit. "This incentive would help encourage efficiencies and accountability with taxpayer funds," House Speaker Paul Ryan wrote last June in his white paper, "A Better Way."
Rep. Greg Walden of Oregon, chairman of the powerful House Energy and Commerce Committee, which has oversight of health care matters, sounded a similar note at a press conference in Washington, D.C., when the GOP plan was announced. "I think it's really important to empower states and to put Medicaid on a budget," he said.
But Fox argued the opposite would happen under a per-capita system -- instead of gaining more control over their Medicaid programs, states would not be able to meet their needs because they'd have fewer dollars to decide how to spend, he said.
Bill Hammond, director of health policy for the nonpartisan Empire Center for Public Policy in New York, said House leaders' decision to tie future Medicaid funding to medical inflation could help mute concerns that funding wouldn't keep up with rising costs, but would not address the fairness issue of giving some states higher per-capita amounts than others.
Related: Governors divided over Medicaid's future, but don't want anyone to lose coverage
"If a low-spending state decides it wants to spend more money on paying hospitals and doctors or adding more benefits, they would have a harder time doing that without breaking the federal cap," he said.
Medicaid advocates in New Hampshire are worried because their state has few alternatives to make up for a loss in federal funding. New Hampshire lacks an income or sales tax.
"There is a tremendous amount of fear among families here as Republicans try to dismantle the ACA," said Martha-Jean Madison, co-director of New Hampshire Family Voices.
Kaiser Health News, a nonprofit health newsroom whose stories appear in news outlets nationwide, is an editorially independent part of the Kaiser Family Foundation.
