Ernst and Blackburn are the first Republican women to serve on the powerful panel, and the hearing was the committee's first in Congress's new meeting. Their appointment to the committee is one of the benefits that Republican women have achieved in the 116th Congress.
But GOP women have also suffered significant setbacks in the new congress. One of the most notable is that the number of GOP women selected fell dramatically in the House of Representatives.
There were 23 Republican women serving in Parliament at the last session of the Congress. Now there are only 13 House GOP women legislators.
There are 35 freshmen House Democratic Women, but only a freshman House GOP woman: Carol Miller in West Virginia.
The first woman was elected to Congress in 1
In the wake of the mid-term elections in 2018, some Republicans leave alarm bells and argue that GOP does not make enough to reach out to women.
"There were very few women in Congress who did not return," said former Republican rep. Mia Love who lost her own house race in midterms and is now CNN commentator. "It is not just recruiting, but also support, and when they are there, they help them."
"Women are in the back seat of the Republican Party right now," said Rina Shah, a Republican consultant who has been working on recruitment efforts for GOP women candidates at state and congressional level.
"Although the Republican Party's head is a woman, it is not enough," said Shah, who is also co-founder of the Women & # 39; s Public Leadership Network, an organization that supports women in public office. Ronna McDaniel is the current President of the Republican National Committee.
The Republican Republican Congress Committee, the House Republicans' campaign arm, says it is "aggressive" to work to recruit a multiple candidate slate by 2020.
Some GOP women are also starting.
Republican Republic of Elise Stefanik from New York launched a super-PAC in Thursday to select more Republican women by 2020 after the number of women in the House of Representatives in 2018 was not larger.
"We are facing a crisis level of Republican women in Congress" Stefanik said at the launch event.
Stefanik recently sat down as the recruiting head of the National Republican Congress Committee, the first woman to hold the position to launch her new Super-PAC, E-PAC.
Speaking of his role in 2018 midterms, Stefanik deplored the poor success rate of the female candidates she recruited. Of the women she recruited last cycle, she said "unfortunately half didn't do it through their primaries."
At the launch event, Republican leader Kevin McCarthy also stressed a desire to select more Republican women by 2020.  "We need more women in Congress, especially on the Republican side," he said, adding: "And when we do, I think we will be in the majority again. "
Senate expands the range of GOP women – and new GOP women joining leadership
There have been some bright spots for Republican women in the middle class in 2018 and the new congress.
In the Senate, the series of GOP women's legislators grew. At the 115th Congress, there were six Republican women in the Senate. Now there are eight Republican women, senators serving.
Several of the Republican women's senators from the 116th Congress also made history in mid-2018.
The Republican Martha McSally, who was appointed to fill the Senate Chair, abandoned by former Republican beds Jon Kyl, is the first female Republican senator from Arizona.
Republican Marsha Blackburn has the distinction of being the first female senator from Tennessee.
And the Republican Cindy Hyde-Smith is the first woman to be elected to the Mississippi Congress.
In addition to joining the Senate Court Committee, Ernst of Iowa, has now also become a member of the Senate GOP leadership as Vice-President of the Senate Republican Conference.
Republican Republic Liz Cheney was elected House GOP leader as President of the Republican Conference.
And Miller, the only freshman Republican woman in the Parliament, will now be part of the House Republican whip team, which helps count votes and advance the priorities of House Republican leaders.
Political landscape for GOP women with President Trump
Some claim that President Donald Trump has created a more challenging political landscape for Republican women.
"I think this president has made it very difficult for Republican women to just say that I am who I am, that's what I believe because what he has done is done, we must explain, why he says what he says, "said Shah of the Women 's Public Leadership Network.
Of course, there are plenty of Republican women in the congress that are closely associated with the president and his agenda and high-profile Republican women routinely defending the president against criticism.  For example, President of the Republican National Committee, McDaniel, described the president as a "women's master" and said "he acknowledges that we are adding to the conversation."
Neri Martinez from the future majority project of the Republican Government Management Committee described the challenge facing women who want to run for office in general.
"Most women will find out how to win before they say yes, and many times men will say yes and then figure out how they will win later," said Martinez. that you can't be what you can't see "she added.
CNN's Lauren Fox, Adam Levy and Ethan Cohen contributed to this report.