President Donald Trump took to Twitter Friday morning to repeat his call for a change in Senate rules to remove the filibuster, complaining that his agenda stands to be slowed down by procedure while simultaneously bragging about his administration's accomplishments and lobbing an attack at a high-ranking Republican senator for criticizing him.

"If Senate Republicans don't get rid of the Filibuster Rule and go to a 51% majority, few bills will be passed," he wrote. "8 Dems control the Senate!"

Trump previously called for the end of the filibuster after the defeat of efforts to repeal the health care law known as Obamacare, despite Republican leaders' plans only requiring 51 votes to pass. The defections of several GOP senators – Sens. John McCain, R-Ariz., Susan Collins, R-Maine, and Lisa Murkowski, R-Alaska – were responsible for sinking the latest repeal effort, which failed 49-51 in July.

Trump also took a swipe Friday at Sen. Bob Corker, a Tennessee Republican and chairman of the powerful Foreign Relations Committee, who was once considered a potential running mate for Trump but has become increasingly critical of his performance as president.

"Strange statement by Bob Corker considering that he is constantly asking me whether or not he should run again in '18," Trump wrote. "Tennessee not happy!"

Following the deadly violence between white supremacist marchers and counterprotesters in Charlottesville, Virginia, earlier this month, Corker last week said Trump had not risen to the demands of his office.

"The president has not yet been able to demonstrate the stability, nor some of the competence, that he needs to demonstrate in order to be successful – and we need for him to be successful, our nation needs for him to be successful. It doesn't matter whether you are Republican or Democrat, we need for our president – the world needs our president to be successful, " Corker said while in Chattanooga, Tennessee.

"He also recently has not demonstrated that he understands the character of this nation," Corker also told reporters. "He has not demonstrated that he understands what has made this nation great and what it is today. And he's got to demonstrate the characteristics of a president who understands that. And without the things that I just mentioned happening, our nation is going to go through great peril."

Asked about Corker's remarks, White House press secretary Sarah Huckabee Sanders said Thursday that it was "a ridiculous and outrageous claim and doesn't dignify a response from this podium."

Meanwhile, Trump on Friday additionally defended against the sentiment that his White House is in chaos, praising his new chief of staff, John Kelly.

"General John Kelly is doing a fantastic job as Chief of Staff," Trump said. "There is tremendous spirit and talent in the W.H. Don't believe the Fake News."

"Few, if any, Administrations have done more in just 7 months than the Trump A," he continued. "Bills passed, regulations killed, border, military, ISIS, SC!"

"Nick Adams, 'Retaking America' 'Best things of this presidency aren't reported about. Convinced this will be perhaps best presidency ever," he also said, referencing an Australian author.

Many hoped Kelly, a retired Marine Corps general who left his post as Trump's secretary of homeland security to become chief of staff, would bring a sense of military discipline to the White House – and perhaps to the president.

The New York Times and Politico reported this week that Kelly was instituting a set of rules for how information gets to Trump. But, the Times reported, Kelly is not attempting to “directly control” Trump’s behavior.