At this point we've heard the Republican talking points ad nauseam. Let's take a stroll down memory lane after Pelosi reminded the country that:

All Roads Lead to Putin

Russia, if you're listening, I hope you're able to find the 30,000 emails that are missing - Donald J. Trump, Jul 7 2016 [1]
There’s two people I think Putin pays: Rohrabacher and Trump - Kevin McCarthy, Jun 15 2017 [2]
It [interference in our 2016 election] wasn’t a single attempt. They're [Russia] doing it as we sit here, and they expect to do it during the next campaign - Robert S. Mueller III, Jul 24 2019 [3]
I would think that if they [Ukraine] were honest about it, they'd start a major investigation ... they should investigate the Bidens ... China likewise should start an investigation - Donald J. Trump, Oct 3 2019 [4]
Thank God. No one is accusing us of interfering in the U.S. elections anymore; now they’re accusing Ukraine. - Vladimir Putin, Nov 20 2019 [5]

Mar 18 2014. Russia invaded Ukraine [6]
Sep 1 2016. Mitch McConnell refused to sign bipartisan statement on Russian Interference into US elections [7]
Sep 22 2016. Senator Dianne Feinstein and Congressmen Adam Schiff issued statement warning about Russian effort to influence the U.S. Election [8]
Nov 10 2016. Obama warned Trump about putting Michael Flynn in a high-level position [9]
Nov 18 2016. Elijah Cummings warned Mike Pence in a letter about Michael Flynn's foreign lobbying [10]
Jan 6 2017. The CIA, NSA, FBI, and ODNI concluded that Russia interfered in the 2016 election [11]
Jan 20 2017. Trump hired Michael Flynn as National Security Adviser [12]
Jan 20 2017. Michael Flynn messaged business associates that economic sanctions against Russia would be "ripped up" and a business project was "good to go" [13]
Jan 20 - Feb 7 2017. The Trump Administration worked intensly to lift sanctions on Russia the moment they took office [14]
Jan 26 2017. Acting Attorney General Sally Yates warned the White House Michael Flynn might be subject to blackmail by the Russians [15]
Feb 13 2017. Michael Flynn was fired by the Trump Administration [9]

It now seems the General Flynn was under investigation long before was common knowledge. It would have been impossible for me to know this but, if that was the case, and with me being one of two people who would become president, why was I not told so that I could make a change? - Donald J. Trump, May 17 2019 [16]

May 10 2017. Trump revealed highly classified information to Russian foreign minister (Lavrov) and ambassador in White House Oval Office meeting [17]
May 10 2017. Trump told Russian officials he was not concerned with Moscow's meddling in the US election [18]
Apr 19 2018. Rudy Giuliani joined Trump's personal legal team [19]
May 9 2018 - Jan 18 2019. Florida governor Ron DeSantis met with Lev Parnas six times and his committee received $50,000 from him [20]
Jul 4 2018. Seven Republican Congressmen travelled to Russia during the Fourth of July [21]
Jul 16 2018. Trump sided with Vladimir Putin over the US intelligence community regarding Russia's election interference in the US 2016 election [22]
Aug 2 2018. 8 US Intelligence Groups warned Russia disrupting the US 2018 midterm elections [23]
Nov 1 2018 - Ongoing. House Intelligence Ranking Member Republican Devin Nunes was directly involved in the push for Ukraine Biden investigations by Trump associate Lev Parnas [24]
Feb 25 2019. Trump asked Moscow's advice in dealing with North Korea [25]
Mar 1 2019. House Intelligence Ranking Member Republican Devin Nunes called off a staff trip to Ukraine when he realized House Intelligence Chair Adam Schiff would be told [26]
May 30 2019. Mitch McConnell vowed to block election security bills [27]
Jun 15 2019. Trump accused the NYT for treason for reporting that US escalated counter cyber-attacks on Russia [28]
Jul 25 2019. Trump asked for a favor from Ukranian President Zelensky as he looked for a White House visit [29]
Sep 1 2019. Trump associate Lev Parnas, who pushed Ukranian conspiracy, received $1 million from a Russian bank account [30]
Oct 10 2019. Lev Parnas and Igor Fruman, associates of Giuliani and Trump, were arrested [31]
Nov 13 2019. The conspiracy that Ukraine interfered in the US 2016 elections has been thoroughly debunked [32]
Dec 2 2019. John Kennedy backed Russian conspiracy theory that Ukraine meddled in the US 2016 election [33]
Dec 9 2019. Ted Cruz backed Russian consipiracy theory that Ukraine meddled in US 2016 election [34]
Dec 10 2019. Russian Foreign Minister Sergey Lavrov visited Oval Office for second time since Russian election interference [35]
Dec 13 2019. McConnell vows total coordination with White House on Impeachment trial in Senate [36]
Dec 14 2019. Lindsey Graham backed Russian conspiracy theory that Ukraine meddled in the US 2016 election [37]
Dec 14 2019. Lindsey Graham gives his word not to be a fair juror in the trial of Donald John Trump's impeachment [38]