"curtail access to" is correct and usable in written English.
You can use this phrase when referring to someone or something being restricted from accessing something. For example, "The country decided to curtail access to the internet after a new law was passed."
By feeding a caricature, Trump is effectively advancing the case of those who would seek to curtail access to guns.
In late December the governing People's party approved legislation that would severely curtail access to abortion in the country.
The government's decision this week to severely curtail access to mobility payments condemns people with serious disabilities to a lifetime of dependence, social isolation, and unemployment.
But they caution that overly stringent rules would hamper legitimate lenders and curtail access to loans for people who need them.
Now, a debate heating up in Washington puts a twist on the query: Are we willing to curtail access to information in exchange for cybersecurity?
The attack on voting rights in North Carolina is a shameful attempt by the state's politicians to curtail access to the ballot, in ways devised particularly to discourage voting by African-Americans.
Spain also curtails access to benefits for those who have not worked unless they can prove extreme hardship.
They said it tied the hands of state officials and curtailed access to education and training for welfare recipients.
But markets are exceptionally good at evaluating risk, and if countries really do become more reckless they'll pay the price in higher interest rates and curtailed access to capital.
We agree with your conclusion that a bill before Congress, Senator Patrick J. Leahy's Protect IP Act, is necessary legislation aimed at curtailing access to rogue sites based overseas that steal American products.
John Cornyn, the senior senator from Texas, who had met Obama's request for curtailed access to firearms with a bill to force all states to recognize concealed-carry licenses (Texas permits open carry), warmly greeted the President.
