100 days.

What normally would seem like a simple stretch of time has been an exhausting eternity under the regime of President Donald Trump.

He reached, or rather, we survived the 100-day milestone last Saturday.

We are seeing in these first three months that many of the warnings sounded in this space and elsewhere about what would happen under a Trump presidency unfortunately are coming to ugly fruition.

We point first to President Trump’s assault on health care for Americans, which continues with his latest efforts to undo Obamacare, or the Affordable Care Act.

The measure now pushed by the Trump administration and Republicans in Congress would allow states to get waivers from Obamacare mandates that insurance companies provide “essential health benefits.” That means states getting the waivers could ditch requirements that insurance plans cover annual checkups, emergency services, maternity and newborn care, and chronic disease management for such health issues as high blood pressure and diabetes.

States also could get waivers allowing insurance companies to charge higher premiums to people based on their “health status.” People with chronic illnesses, such as diabetes, high blood pressure or cancer, could be charged more for their health insurance than others.

Such changes would return us to the days before Obamacare became law seven years ago, when millions of people had to choose each month between paying to see the doctor and buying medicine or paying the rent and buying groceries.

Many of the 20 million seniors, millennials, families and chronic disease patients who finally have been able to get health insurance under Obamacare are expected to be forced back into the ranks of the uninsured if Trumpcare becomes law.

During these first 100 days, President Trump also has signed executive orders that would undo environmental protections, giving companies and their profits priority over environmental safeguards.

Just last week, he signed an order essentially opening the Atlantic Ocean, including the Virginia coastline, to oil and gas drilling. The Environmental Protection Agency has pulled a lot of climate change data from its website, saying it was updated to “reflect the approach of new leadership.”

Other executive orders he has issued would ban the entry of travelers and immigrants from six predominantly Muslim nations into the United States and lay the groundwork for dismantling the Dodd-Frank Wall Street Reform and Consumer Protection Act that former President Obama signed in 2010 to protect consumers from another financial crisis and economic meltdown.

President Trump’s budget proposals would end the Low Income Home Energy Assistance Program that helps families pay to heat their homes and get help with energy-related repairs and weatherization; cut the Department of Housing and Urban Development’s budget by $6 billion, reducing its ability to provide housing assistance to low-income families and the homeless; cut the Women, Infants and Children program that provides money to states for supplemental foods and nutrition to low-income women during pregnancy and after delivery and to their newborns and children up to age 5; reduce funds to programs that support students served by historically black colleges and universities, including Pell grants, federal work-study assistance and other student aid; reduce funding for after-school and teacher support programs; gut EPA grant programs that help states monitor public water systems; eliminate programs helping to limit children’s exposure to lead paint; freeze or eliminate funding for scientific research on such issues as climate change; cut the U.S. Department of Health and Human Services’ people-helping budget by 16 percent and slash the National Institutes of Health’s budget by 20 percent, reducing its effectiveness on groundbreaking medical research; and eliminate the Senior Community Service and Employment Program, a work-based job training program for older Americans.

We have not mentioned the president’s nomination of conservative Justice Neil Gorsuch to the U.S. Supreme Court and the impact his lifetime appointment may have on the high court’s decisions for years to come.

Nor have we mentioned his appointments of former U.S. Sen. Jeff Sessions as U.S. attorney general and Betsy DeVos as head of the U.S. Department of Education. Mr. Sessions, who has called for a return to tougher policing policies and the war on drugs, already has put a temporary halt to the U.S. Justice Department’s pacts with 19 police departments to end police misconduct, abuses and killings of African-American men, women and children.

While Mr. Sessions calls it a temporary halt while his office reviews the pacts, he said it was necessary to ensure they do not work against the Trump administration’s goals of promoting officer safety and morale while fighting violent crime. His department is more interested in protecting the police than in protecting the citizens police are sworn to serve.

Mr. Sessions also rescinded an Obama-era order to reduce the use of privately operated prisons. Immediately after the announcement, the stock of private prison companies shot up, knowing their financial incentive to lock people up will be rewarded by the Trump government.

President Trump also has signed into law a bill allowing mining and oil companies to pay off foreign governments without disclosing those payments to the public.

All of this has been done in 100 days, when President Trump has cost the taxpayers millions of dollars for security as he flies to his Florida resort to play golf and to protect his wife and son, who still live in Trump Tower in New York.

He has failed to disclose his federal tax returns so that the American people can see whether he has business connections to the Russians and Vladimir Putin. The FBI and the Senate Intelligence Committee are investigating whether the Russian government colluded with the Trump campaign to influence the outcome of the 2016 presidential election.

And he continues to bring the world to the brink of a nuclear holocaust as he bullies and plays with North Korean madman Kim Jong-un.

As writer James Baldwin said, “Ignorance, allied with power, is the most ferocious enemy justice can have.”

We urge our readers not to let the magnitude of the nation’s problems and the results of the last 100 days to overwhelm you.

We must remain vigilant and remain educated about what is happening and continue to make calls and send emails — even if they are weekly — to our representatives in Congress to tell them how we expect them to vote on these critical measures.

In this first 100 days, we have seen the impact public engagement, protest and voice have had on members of Congress and initial attempts by the Trump administration and the GOP to eliminate Obamacare. Your voice is your weapon.

“People can cry much easier than they can change,” Mr. Baldwin also wrote.

This is not the time to sit and cry. We have 265 more days to get through this first year of Trump.

The Congressional Black Caucus has issued a guide, “What Did Trump Do? The First 100 Days, #Staywoke List.” We encourage people to read it. (https://cbc.house.gov/uploadedfiles/stay_woke_list.pdf)

The members of the CBC collectively represent 78 million Americans, 17 million of whom are African-American.

If we really want America to be great again, we owe it to ourselves to stay on it and stay on President Trump.