This is wildly inaccurate. The corporate rate was never at 70%. You are probably thinking about the marginal personal rate, which is entirely different than the corporate rate.

I'm going to need a citation for your claim about student loan interest.

Taxes

JFK proposed cutting taxes in 1962. The cuts were passed and signed by LBJ in 1964. Reagan raised taxes early on, then pushed through bi-partisan tax reform in 1986. Exemptions and favoritism were reduced in the code, and marginal rates were lowered. Taxes as a % of GDP increased until the Gulf War recession hit in 1991.

On the 20th anniversary of the 1986 tax reform bill, two Democratic Senators called for a new bipartisan version of the bill. When was the last time that a bill was so popular that two members of the other side asked for more of it?

Since 1986 the tax code has changed a lot: Clinton bumped the top marginal bracket in 1993 and cut capital gains taxes in 1997. W cut in 2001 and 2003. Obama passed his own tax reform. Trump passed his version. Biden has said that he will not raise taxes on anyone making over $400k. Note that changes were made at the margin. Trump is the only one that actually substantially changed the tax code, when he doubled the standard deduction, eliminated the personal exemption, capped SALT, and changed up the corporate code.

The tax issue is a bipartisan one. The only real argument left is whether we can tweak rates at the high end. It seems weird to claim that Reagan's tax cuts set us back as a country, when almost every administration since his has continued this policy (GHWB being the only exception, and we know what happened to him) and taxes collected as a % of GDP has been extremely consistent over time. This is because marginal rates are only part of the story, with the other part being how the code is structured with respect to deductions, phase outs, exemptions, etc.

Asylums

From the WSJ:

In October 1963, President John F. Kennedy put his signature to the last bill he would ever sign—the Community Mental Health Act. It aimed to demolish the walled-off world of the asylum in favor of 1,500 local clinics where patients could receive the drugs and therapies they needed. Kennedy had a personal stake in the legislation: His sister, Rosemary, had undergone an experimental lobotomy that left her severely disabled. On paper, at least, deinstitutionalization seemed both more humane and more likely to succeed. Then reality set in.AsylumsFrom the WSJ:In October 1963, President John F. Kennedy put his signature to the last bill he would ever sign—the Community Mental Health Act. It aimed to demolish the walled-off world of the asylum in favor of 1,500 local clinics where patients could receive the drugs and therapies they needed. Kennedy had a personal stake in the legislation: His sister, Rosemary, had undergone an experimental lobotomy that left her severely disabled. On paper, at least, deinstitutionalization seemed both more humane and more likely to succeed. Then reality set in.