Tennessee Walking Horse advocates visited the White House on Wednesday hoping to present a petition asking President Donald Trump to implement a USDA rule that would ban the use action devices sometimes used on some gaited horse breeds, which was one of several regulations frozen after the administration change in January.

Before Trump took office earlier this year, the USDA approved the rule, which prohibits the use of action devices on Tennessee Walking Horses and Racking Horses at horse shows, exhibitions, sales, and auctions. It also forbids the use of boots other than soft rubber or leather bell boots and quarter boots used as protective devices as well as pads and wedges, except for those with a therapeutic purpose.

The ban on action devices was slated to take effect in February, while the other rule provisions were scheduled to become effective Jan. 1. 2018.

The rule was among many frozen by executive order when Trump took office on Jan. 20. Such freezes are frequently imposed so new administrations can review new regulations, policy-related statement, budgets, and relevant legislation.

When the freeze took place, Mike Inman, chief executive officer of the Tennessee Walking Horse National Celebration, said the Walking Horse industry will use the suspension period to talk with prospective incoming USDA Secretary Sonny Perdue about the “important facts regarding proposed rule-making.”

It is uncertain whether Perdue, who is expected to be confirmed shortly, will implement the rule once he takes office.

On March 29, members of the Tennessee Walking Horse advocacy group Citizens Campaign Against "Big Lick" Animal Cruelty sought to deliver a petition—started when the freeze took place—asking that the rule be published in the Federal Record and implemented, said the group’s spokesman Clant Seay. He said more than 100,000 people from across the country had signed the petition.

“This petition is not going to a Congressman,” he said. “We’ll get it in the White House one way or another.”

Meanwhile, Inman said he was not surprised about the petition effort, saying it is expected that the anti-soring “faction would continue their opposition to the Tennessee Walking Horse.”

A decision about the rule remains pending.