Republicans in Congress faced growing blowback on Monday from businesses that said they would cut off campaign contributions to those who voted last week to challenge President-elect Joe Biden's victory. The announcements by Amazon.com, General Electric Co, Dow, AT&T, Comcast Corp, Verizon Communications, American Express Co, Airbnb, Best Buy and Mastercard, among others, threaten to throttle fundraising resources for Republicans who will soon be out of power in the White House and both chambers of Congress. AT&T and Comcast, for example, are among the biggest corporate donors in Washington.